NationMaster - Encyclopedia: Alfred Russel Wallace

Alfred Russel Wallace OM, FRS (8 January 1823 – 7 November 1913) was a British naturalist, explorer, geographer, anthropologist and biologist. For other uses, see Cornwall (disambiguation). ... The Hold House Port Mear Square Island Port Mear Beach, circa 1932, Tate Gallery. ... Moved from overwritten, undernamed Wallace. ... January 8 is the 8th day of the year in the Gregorian calendar. ... 1823 was a common year starting on Wednesday (see link for calendar). ... Image File history File links Flag_of_Wales_2. ... â€¹ The template below has been proposed for deletion. ... Monmouthshire (Welsh: ) is both a historic county and principal area in south-east Wales. ... This article is about the country. ... is the 311th day of the year (312th in leap years) in the Gregorian calendar. ... Year 1913 (MCMXIII) was a common year starting on Wednesday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Tuesday of the 13-day-slower Julian calendar). ... Image File history File links Flag_of_England. ... Broadstone, Dorset is a small town near Poole in South England. ... Dorset (pronounced DOR-sit or [dÉ”.sÉ™t], and sometimes in the past called Dorsetshire) is a county in the south-west of England, on the English Channel coast. ... Motto (French) God and my right Anthem No official anthem specific to England â€” the anthem of the United Kingdom is God Save the Queen. See also Proposed English National Anthems. ... Darwins illustrations of beak variation in the finches of the GalÃ¡pagos Islands, which hold 13 closely related species that differ most markedly in the shape of their beaks. ... Biogeography is the science which deals with patterns of species distribution and the processes that result in such patterns. ... The Royal Medals of the Royal Society of London were established by King George IV. They were further supported with certain changes to their conditions, by King William IV and Queen Victoria. ... The Copley Medal is a scientific award for work in any field of science, the highest award granted by the Royal Society of London. ... The Order of Merit is a British and Commonwealth Order bestowed by the Monarch. ... The Order of Merit is a British and Commonwealth Order bestowed by the Monarch. ... The Fellowship of the Royal Society was founded in 1660. ... January 8 is the 8th day of the year in the Gregorian calendar. ... 1823 was a common year starting on Wednesday (see link for calendar). ... is the 311th day of the year (312th in leap years) in the Gregorian calendar. ... Year 1913 (MCMXIII) was a common year starting on Wednesday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Tuesday of the 13-day-slower Julian calendar). ... Table of natural history, 1728 Cyclopaedia Natural history is an umbrella term for what are now often viewed as several distinct scientific disciplines of integrative organismal biology. ... See also explorations, sea explorers, astronaut, conquistador, travelogue, the History of Science and Technology and Biography. ... A geographer is a crazy psycho whose area of study is geocrap, the pseudoscientific study of Earths physical environment and human habitat and the study of boring students to death. ... See Anthropology. ... A biologist is a scientist devoted to and producing results in biology through the study of organisms. ...

He did extensive fieldwork first in the Amazon River basin, and then in the Malay Archipelago, where he identified the Wallace line dividing the fauna of Australia from that of Asia. He is best known for independently proposing a theory of natural selection which prompted Charles Darwin to publish his own more developed and researched theory sooner than intended. Wallace was also one of the leading evolutionary thinkers of the 19th century who made a number of other contributions to the development of evolutionary theory, including the concept of warning colouration in animals, and the Wallace effect. He was also considered the 19th century’s leading expert on the geographical distribution of animal species and is sometimes called the "father of biogeography".^[1] This article is about the river. ... World map depicting Malay Archipelago The Malay Archipelago is a vast archipelago located between mainland Southeastern Asia (Indochina) and Australia. ... Wallaces line between Australasian and Southeast Asian fauna. ... World map showing the location of Asia. ... Darwins illustrations of beak variation in the finches of the GalÃ¡pagos Islands, which hold 13 closely related species that differ most markedly in the shape of their beaks. ... For other people of the same surname, and places and things named after Charles Darwin, see Darwin. ... The bright colours of this Yellow-winged Darter dragonfly serve as a warning to predators of its noxious taste. ... In 1889, A. R. Wallace wrote the book Darwinism, which explained and defended natural selection. ... Biogeography is the science which deals with patterns of species distribution and the processes that result in such patterns. ...

Wallace was strongly attracted to radical ideas. His advocacy of spiritualism and his belief in a non-material origin for the higher mental faculties of humans strained his relationship with the scientific establishment, especially with other early proponents of evolution. He was critical of what he considered to be an unjust social and economic system in 19th century Britain, and was one of the first prominent scientists to raise concerns over the environmental impact of human activity. By 1853, when the popular song Spirit Rappings was published, Spiritualism was the object of intense curiosity. ... RenÃ© Descartes illustration of dualism. ...

Biography

Early life

Wallace was born in the village of Llanbadoc, near Usk, Monmouthshire, Wales.^[2] He was the eighth of nine children of Thomas Vere Wallace and Mary Anne Greenell. His mother was from a respectable middle-class English family from Hertford. Thomas Wallace was of Scottish ancestry and his family, like many Scottish Wallaces, claimed a connection to William Wallace, the leader of a 13th-century rising against England. Thomas Wallace received a law degree but never actually practiced law. He inherited some income-generating property, but bad investments and failed business ventures resulted in a steady deterioration of the family's financial position.^[3] Image File history File links Size of this preview: 427 Ã— 599 pixelsFull resolution (587 Ã— 824 pixel, file size: 406 KB, MIME type: image/jpeg) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links Size of this preview: 427 Ã— 599 pixelsFull resolution (587 Ã— 824 pixel, file size: 406 KB, MIME type: image/jpeg) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Historically, Mechanics Institutes were educational establishments formed to provide adult education, particularly in technical subjects, to working people. ... Llanbadoc is a village in the ceremonial county of Monmouthshire in Wales. ... â€¹ The template below has been proposed for deletion. ... Monmouthshire (Welsh: ) is both a historic county and principal area in south-east Wales. ... This article is about the country. ... Hertford (standard pronunciations /hÉ‘tÖ½fÉ™d/ and /hÉ‘Ö½fÉ™d/; local pronunciation /[h]É‘ËÊ”Ö½fÉ™d/) is the county town of Hertfordshire, England, and is in the East Hertfordshire district of that county. ... â€œScotâ€ redirects here. ... For other persons named William Wallace, see William Wallace (disambiguation). ...

When Wallace was five years old, his family moved to Hertford, north of London, where he attended Hertford Grammar School until financial difficulties forced his family to withdraw him in 1836.^[4] Wallace then moved to London to live and work with his older brother John, a 19-year-old apprentice builder. This was a stopgap measure until William, his oldest brother, was ready to take him on as an apprentice surveyor. While there he attended lectures and read books at the London Mechanics Institute, where he was exposed to the radical political ideas of social reformers like Robert Owen and Thomas Paine. He left London in 1837 to live with William and work as his apprentice for six years. At the end of 1839 they moved to Kington near the Welsh border before eventually settling at Neath in Glamorgan, and between 1840 and 1843, Wallace did surveying work in the countryside of the west of England and Wales.^[5]^[6] By the end of 1843 William's business had declined due to difficult economic conditions, and Wallace left in January. This article is about the capital of England and the United Kingdom. ... Richard Hale School is an all-boys school located in Hertford, Hertfordshire in the south east of England. ... This article is about the capital of England and the United Kingdom. ... Surveyor at work with a leveling instrument. ... Historically, Mechanics Institutes were educational establishments formed to provide adult education, particularly in technical subjects, to working people. ... Robert Owen (May 14, 1771 â€“ November 17, 1858) was a Welsh socialist and social reformer. ... Thomas Paine (Thetford, England, 29 January 1737 â€“ 8 June 1809, New York City, USA) was a pamphleteer, revolutionary, radical, and intellectual. ... Kington is the name of more than one place in the United Kingdom: Kington, Herefordshire, England Kington, Worcestershire, England This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Image:Neatharms. ... Glamorgan or Glamorganshire (Welsh: ) is one of thirteen historic counties and former administrative counties of Wales. ... Motto (French) God and my right Anthem No official anthem specific to England â€” the anthem of the United Kingdom is God Save the Queen. See also Proposed English National Anthems. ... This article is about the country. ...

After a brief period of unemployment, he was hired as a master at the Collegiate School in Leicester to teach drawing, map making, and surveying. Wallace spent a lot of time at the Leicester library where he read An Essay on the Principle of Population by Thomas Malthus and where one evening he met the entomologist Henry Bates. Bates was only 19 years old but had already published a paper on beetles in the journal Zoologist. He befriended Wallace and started him collecting insects.^[7]^[8] William died in March 1845, and Wallace left his teaching position to assume control of his brother's firm in Neath. He and his brother John were unable to make the business work, and after a couple of months Wallace found work as a civil engineer for a nearby firm that was working on a survey for a proposed railway in the Vale of Neath. Wallace's work on the survey involved spending a lot of time outdoors in the countryside, allowing him to indulge his new passion for collecting insects. Wallace was able to persuade his brother John to join him in starting another architecture and civil engineering firm, which carried out a number of projects including designing a building for the Mechanics Institute of Neath. William Jevons, the founder of that institute, was impressed by Wallace and persuaded him to give lectures there on science and engineering. In the autumn of 1846 he and John were able to purchase a cottage near Neath, where they lived with their mother and sister Fanny (his father had died in 1843).^[9]^[10] During this period he read avidly, exchanging letters with Bates about the anonymous evolutionary treatise Vestiges of the Natural History of Creation, Charles Darwin's Journal and Remarks, and Charles Lyell's Principles of Geology.^[11] Leicester city centre, looking towards the Clock Tower Leicester (pronounced ) is the largest city and unitary authority in the English East Midlands. ... An Essay on the Principle of Population was first published anonymously in 1798. ... Thomas Robert Malthus, FRS (13th February, 1766 â€“ 29th December, 1834), was an English demographer and political economist. ... Henry Bates was a California politician. ... River Neath (Afon Nedd in Welsh) is a river in south Wales running south west from its source to its confluence with Swansea Bay below Briton Ferry. ... Vestiges of the Natural History of Creation was a book published anonymously in England in 1844. ... A watercolour by HMS Beagles draughtsman, Conrad Martens. ... Principles of Geology is a book by the Scottish geologist Charles Lyell. ...

Exploration and study of the natural world

Inspired by the chronicles of earlier traveling naturalists including Alexander von Humboldt, Charles Darwin, and William Henry Edwards, Wallace decided that he too wanted to travel abroad as a naturalist.^[12] In 1848 Wallace and Henry Bates left for Brazil aboard the Mischief. Their intention was to collect insects and other animal specimens in the Amazon Rainforest and sell them to collectors back in England. They also hoped to gather evidence of the transmutation of species. Wallace and Bates spent most of their first year collecting near Belém do Pará, then explored inland separately, occasionally meeting to discuss their findings. In 1849, they were briefly joined by another young explorer, botanist Richard Spruce, along with Wallace's younger brother Herbert; Herbert left soon after (dying two years later from yellow fever), but Spruce, like Bates, would spend over ten years collecting in South America.^[13] Image File history File links Size of this preview: 800 Ã— 486 pixelsFull resolution (1768 Ã— 1073 pixel, file size: 1. ... Image File history File links Size of this preview: 800 Ã— 486 pixelsFull resolution (1768 Ã— 1073 pixel, file size: 1. ... An 1859 portrait of Alexander von Humboldt by the artist Julius Schrader, showing Mount Chimborazo in the background. ... For other people of the same surname, and places and things named after Charles Darwin, see Darwin. ... William Henry Edwards (1822 â€“ 1909) was an important entomologist in the United States. ... Henry Bates was a California politician. ... Map of the Amazon rainforest ecoregions as delineated by the WWF. Yellow line encloses the Amazon rainforest. ... Transmutation of species refers to the altering of one species into another. ... This article is about the city in Brazil. ... Richard Spruce (September 10, 1817 - December 28, 1893) was an English botanist and explorer. ...

Wallace continued charting the Rio Negro for four years, collecting specimens and making notes on the peoples and languages he encountered as well as the geography, flora, and fauna.^[14] On 12 July 1852, Wallace embarked for England on the brig Helen. After twenty-eight days at sea, balsam in the ship's cargo caught fire and the crew was forced to abandon ship. Wallace's entire collection was lost, and he could only save part of his diary and a few sketches. Wallace and the crew spent ten days in an open boat before being picked up by the brig Jordeson.^[15] The Negro (Spanish: black) River, the great northern tributary of the Amazon River and the largest blackwater river in the world, has its sources along the watershed between the Orinoco and the Amazon basins, and also connects with the Orinoco by way of the Casiquiare canal. ... is the 193rd day of the year (194th in leap years) in the Gregorian calendar. ... 1852 was a leap year starting on Thursday (see link for calendar). ... Balsam (pronounced balm) is a term used for various pleasantly scented plant products. ...

After his return to England, Wallace spent eighteen months in London living on the insurance payment for his lost collection and selling the surviving remnants. During this period, despite having lost almost all of the notes from his South American expedition, he wrote six academic papers (which included "On the Monkeys of the Amazon") and two books; Palm Trees of the Amazon and Their Uses and Travels on the Amazon.^[16] He also made connections with a number of other British naturalists—most significantly, Darwin.^[17]^[18]

From 1854 to 1862, Wallace travelled through the Malay Archipelago or East Indies (now Malaysia and Indonesia), to collect specimens for sale and to study nature. His observations of the marked zoological differences across a narrow strait in the archipelago led to his proposing the zoogeographical boundary now known as the Wallace line. Wallace collected more than 125,000 specimens in the Malay Archipelago (more than 80,000 beetles alone), and more than a thousand of them represented species new to science.^[19] One of his better known species descriptions during this trip is the gliding tree frog Rhacophorus nigropalmatus, known as Wallace's flying frog. While he was exploring the archipelago he refined his thoughts about evolution and had his famous insight on natural selection. Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... World map depicting Malay Archipelago The Malay Archipelago is a vast archipelago located between mainland Southeastern Asia (Indochina) and Australia. ... The Indies, on the display globe of the Field Museum, Chicago The Indies or East Indies (or East India) is a term used to describe lands of South and South-East Asia, occupying all of the former British India, the present Indian Union, Pakistan, Bangladesh, Myanmar, Sri Lanka, Maldives, and... Wallaces line between Australasian and Southeast Asian fauna. ... Binomial name Boulenger, 1895 The species Rhacophorus nigropalmatus, or Wallaces flying frog, is a moss frog found in the Thai Malay peninsula and islands of Indonesia. ... The flying frog is a frog that has the ability to glide. ... Darwins illustrations of beak variation in the finches of the GalÃ¡pagos Islands, which hold 13 closely related species that differ most markedly in the shape of their beaks. ...

His studies and adventures there were eventually published in 1869 as The Malay Archipelago. The Malay Archipelago became one of the most popular journals of scientific exploration of the 19th century, kept continuously in print by its original publisher (Macmillan) into the 2nd decade of the 20th century. It was praised by scientists such as Darwin (to whom the book was dedicated), and Charles Lyell, and by non scientists such as the novelist Joseph Conrad who called it his "favorite bedside companion", and used it as source of information for several of his novels, especially Lord Jim.^[20] Map from The Malay Archipelago showing Alfred Russel Wallaces travels Illustration of a flying frog from The Malay Archipelago The Malay Archipelago is a book by the British naturalist Alfred Russel Wallace that chronicles his scientific exploration, during the eight year period 1854 to 1862, of the southern portion... Charles Lyell The frontispiece from Principles of Geology Sir Charles Lyell, 1st Baronet, KT, (November 14, 1797 â€“ February 22, 1875), Scottish lawyer, geologist, and populariser of uniformitarianism. ... // Joseph Conrad (born Teodor JÃ³zef Konrad NaÅ‚Ä™cz-Korzeniowski, 3 December 1857 â€“ 3 August 1924) was a Polish-born novelist who spent most of his adult life in Britain. ... Lord Jim is a novel by Joseph Conrad, originally published in Blackwoods Magazine from October 1899 to November 1900. ...

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Return to England, marriage and children

In 1862 Wallace returned to England, where he moved in with his sister Fanny Sims and her husband Thomas. While he was recovering from the rigours of his travels Wallace organized his collections, and gave numerous lectures about his adventures and discoveries to scientific societies such as the Zoological Society of London. Later that year he visited Darwin at home, and became friendly with both Charles Lyell and Herbert Spencer.^[21] During the 1860s Wallace wrote papers and gave lectures defending natural selection, and corresponded with Darwin about a variety of topics including sexual selection, warning colouration, and the possible effect of natural selection on hybridization and the divergence of species.^[22] In 1865 he began investigating spiritualism.^[23] The Zoological Society of London (sometimes known by the abbreviation ZSL) is a learned society founded in April 1826 by Sir Thomas Stamford Raffles, Lord Auckland, Sir Humphry Davy, Joseph Sabine, Nicholas Aylward Vigors and other eminent naturalists. ... Charles Lyell The frontispiece from Principles of Geology Sir Charles Lyell, 1st Baronet, KT, (November 14, 1797 â€“ February 22, 1875), Scottish lawyer, geologist, and populariser of uniformitarianism. ... For other persons named Herbert Spencer, see Herbert Spencer (disambiguation). ... Illustration from The Descent of Man and Selection in Relation to Sex by Charles Darwin showing the Tufted Coquette Lophornis ornatus, female on left, ornamented male on right. ... The bright colours of this Yellow-winged Darter dragonfly serve as a warning to predators of its noxious taste. ...

After a year of courtship, Wallace became engaged in 1864 to a young woman whom in his autobiography he would only identify as Miss L. However, to Wallace's great dismay, she broke off the engagement.^[24] In 1866 Wallace married Annie Mitten. Wallace had been introduced to Mitten through Richard Spruce, who had befriended Wallace in Brazil, and who was also a good friend of Annie Mitten's father, William Mitten, an expert in mosses. In 1872, Wallace had a house built of concrete on land he leased in Grays in Essex where he lived until 1876. The Wallaces had three children; Herbert (1867–1874) who died in childhood, Violet (1869–1945), and William (1871–1951).^[25] Richard Spruce (September 10, 1817 - December 28, 1893) was an English botanist and explorer. ... Grays is the largest town in the borough and unitary authority of Thurrock to the east of London. ...

Financial struggles

In the late 1860s and 1870s Wallace was very concerned about the financial security of his family. While he was in the Malay Archipelago the sale of specimens had brought in a considerable amount of money, which had been carefully invested by the agent who sold the specimens for Wallace. However, on his return to England Wallace made a series of bad investments in railways and mines that squandered most of the money, and he found himself badly in need of the proceeds from the publication of The Malay Archipelago.^[26] Despite assistance from his friends he was never able to secure a permanent salaried position such as curatorship of a museum. In order to remain financially solvent Wallace worked grading government examinations, wrote 25 papers for publication between 1872 and 1876 for various modest sums, and was paid by Lyell and Darwin to help edit some of their own works.^[27] In 1876 Wallace needed a £500 advance from the publisher of The Geographical Distribution of Animals to avoid having to sell some of his personal property.^[28] Darwin was very aware of Wallace's financial difficulties and lobbied long and hard to get Wallace awarded a government pension for his lifetime contributions to science. When the £200 annual pension was awarded in 1881 it helped to stabilize Wallace's financial position by supplementing the income from his writings.^[29] Map from The Malay Archipelago showing Alfred Russel Wallaces travels Illustration of a flying frog from The Malay Archipelago The Malay Archipelago is a book by the British naturalist Alfred Russel Wallace that chronicles his scientific exploration, during the eight year period 1854 to 1862, of the southern portion... GBP may be: short for Game Boy Player the ISO currency code for the British Pound Sterling. ... GBP may be: short for Game Boy Player the ISO currency code for the British Pound Sterling. ...

Social activism

John Stuart Mill was impressed by remarks criticizing English society that Wallace had included in The Malay Archipelago, and asked him to join the general committee of his Land Tenure Reform Association, but the association dissolved after Mill's death in 1873 and Wallace wrote only a handful of articles on political and social issues prior to 1879. However, in that year he entered the debates over trade policy and land reform in earnest. He believed that rural land should be owned by the state and leased to people who would make whatever use of it that would benefit the largest number of people, thus breaking the often-abused power of wealthy landowners in English society. In 1881 Wallace was elected as the first president of the newly formed Land Nationalisation Society. The next year he published a book, Land Nationalisation; Its Necessity and Its Aims, on the subject. He criticized England's free trade policies for the negative impact they had on working class people.^[30]^[18] In 1889 Wallace read Looking Backward by Edward Bellamy and declared himself a socialist.^[31] These ideas led him to oppose both Social Darwinism and Eugenics, ideas supported by other prominent 19th century evolutionary thinkers, on the grounds that contemporary society was too corrupt and unjust to allow any reasonable determination of who was fit or unfit.^[32] In 1898 Wallace wrote a paper advocating a pure paper money system, unbacked by silver or gold, which impressed the economist Irving Fisher so much that he dedicated his 1920 book Stabilizing the Dollar to Wallace.^[33] Wallace wrote extensively on other social topics including his support for woman's suffrage, and the dangers and wastefulness of militarism.^[34]^[35] Wallace continued his social activism for the rest of his life, publishing the book The Revolt of Democracy just weeks before his death.^[36] John Stuart Mill (20 May 1806 â€“ 8 May 1873), British philosopher, political economist and Member of Parliament, was an influential liberal thinker of the 19th century. ... -1... Free trade is an economic concept referring to the selling of products between countries without tariffs or other trade barriers. ... Looking Backward: 2000-1887 is a utopian novel by Edward Bellamy, a lawyer and writer from western Massachusetts, and was first published in 1888. ... Edward Bellamy, circa 1889. ... Socialism is a social and economic system (or the political philosophy advocating such a system) in which the economic means of production are owned and controlled collectively by the people. ... Social Darwinism is the idea that Charles Darwins theory can be extended and applied to the social realm, i. ... Eugenics is the self-direction of human evolution: Logo from the Second International Congress of Eugenics, 1921, depicting it as a tree which unites a variety of different fields. ... Irving Fisher (February 27, 1867 Saugerties, New York â€” April 29, 1947, New York) was an American economist, health campaigner, and eugenicist. ... The international movement for womens suffrage, led by suffragists (commonly called suffragettes), was a social, economic and political reform movement aimed at extending the suffrage (i. ... Militarism or militarist ideology is the doctrinal view of a society as being best served (or more efficient) when it is governed or guided by concepts embodied in the culture, doctrine, system, or people of the military. ...

Wallace continued his scientific work in parallel with his social commentary. In 1880 he published Island Life as a sequel to The Geographic Distribution of Animals. In November 1886 Wallace began a ten month trip to the United States to give a series of popular lectures. Most of the lectures were on Darwinism (evolution and natural selection), but he also gave speeches on biogeography, spiritualism, and social/economic reform. During the trip he was reunited with his brother John who had emigrated to California years before. He also spent a week in Colorado, with the American botanist Alice Eastwood as his guide, exploring the flora of the Rocky Mountains and gathering evidence that would lead him to a theory on how glaciation might explain certain commonalities between the mountain flora of Europe, Asia and North America, which he published in 1891 in the paper "English and American Flowers". He met many other prominent American naturalists and viewed their collections. His 1889 book Darwinism used information he collected on his American trip, and information he had compiled for the lectures.^[37]^[38] Biogeography is the science which deals with patterns of species distribution and the processes that result in such patterns. ... Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area Ranked 3rd - Total 158,302 sq mi (410,000 kmÂ²) - Width 250 miles (400 km) - Length 770 miles (1,240 km) - % water 4. ... Alice Eastwood (1859-1953) was born in Toronto, Ontario, Canada, but is considered an American botanist, since her life after age 14 was in the USA. From age 20 to 30 she was a teacher in Denver, Colorado and taught herself botany. ... For individual mountains named Rocky Mountain, see Rocky Mountain (disambiguation). ...

Death

On 7 November 1913, Wallace died at home in the country house he called Old Orchard, which he had built a decade earlier.^[39] He was 90 years old. His death was widely reported in the press. The New York Times called him "the last of the giants belonging to that wonderful group of intellectuals that included, among others, Darwin, Huxley, Spencer, Lyell, and Owen, whose daring investigations revolutionized and evolutionized the thought of the century." Another commentator in the same edition said “No apology need be made for the few literary or scientific follies of the author of that great book on the 'Malay Archipelago'.”^[40] Some of Wallace's friends suggested that he be buried in Westminster Abbey, but his wife followed his wishes and had him buried in the small cemetery at Broadstone, Dorset.^[39] Several prominent British scientists formed a committee to have a medallion of Wallace placed in Westminster near where Darwin had been buried. The medallion was unveiled on November 1, 1915. is the 311th day of the year (312th in leap years) in the Gregorian calendar. ... Year 1913 (MCMXIII) was a common year starting on Wednesday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Tuesday of the 13-day-slower Julian calendar). ... The New York Times is an internationally known daily newspaper published in New York City and distributed in the United States and many other nations worldwide. ... The Collegiate Church of St Peter, Westminster, which is almost always referred to by its original name of Westminster Abbey, is a mainly Gothic church, on the scale of a cathedral (and indeed often mistaken for one), in Westminster, London, just to the west of the Palace of Westminster. ... Broadstone, Dorset is a small town near Poole in South England. ... is the 305th day of the year (306th in leap years) in the Gregorian calendar. ... Year 1915 (MCMXV) was a common year starting on Friday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Thursday[1] of the 13-day-slower Julian calendar). ...

Theory of evolution

Early evolutionary thinking

Unlike Darwin, Wallace began his career as a travelling naturalist already believing in the transmutation of species. The concept had been advocated by Jean-Baptiste Lamarck, Geoffroy Saint-Hilaire, Erasmus Darwin, and Robert Grant, among others. It was widely discussed, but not generally accepted by leading naturalists, and was considered to have radical, even revolutionary connotations.^[41]^[42] Prominent anatomists and geologists such as Georges Cuvier, Richard Owen, Adam Sedgwick, and Charles Lyell attacked it vigourously.^[43]^[44] It has been suggested that Wallace accepted the idea of the transmutation of species in part because he was always inclined to favour radical ideas in politics, religion and science^[41], and because he was unusually open to marginal, even fringe ideas in science.^[45] Transmutation of species refers to the altering of one species into another. ... Jean-Baptiste Lamarck. ... An engraving of Ã‰tienne Geoffroy Saint-Hilaire. ... This article is about Erasmus Darwin who lived 1731â€“1802; for his descendants with the same name see Erasmus Darwin (disambiguation). ... Robert Edmond Grant (1793-1874), born in Edinburgh and educated at Edinburgh University as a doctor, became one of the foremost biologists of the early 19th century at Edinburgh and subsequently a professor at London University, particularly noted for his influence on Charles Darwin. ... The term Radical (latin radix meaning root) was used from the late 18th century for proponents of the Radical Movement and has since been used as a label in political science for those favouring or trying to produce thoroughgoing political reforms which can include changes to the social order to... Georges Cuvier Baron Georges LÃ©opold ChrÃ©tien FrÃ©dÃ©ric Dagobert Cuvier (August 23, 1769â€“May 13, 1832) was a French naturalist and zoologist. ... Sir Richard Owen KCB (July 20, 1804â€“December 18, 1892) was an English biologist, comparative anatomist and palaeontologist. ... Adam Sedgwick (March 22nd, 1785â€“January 27, 1873) was one of the founders of modern geology. ... Charles Lyell The frontispiece from Principles of Geology Sir Charles Lyell, 1st Baronet, KT, (November 14, 1797 â€“ February 22, 1875), Scottish lawyer, geologist, and populariser of uniformitarianism. ...

He was also profoundly influenced by Robert Chambers' work Vestiges of the Natural History of Creation, a highly controversial work of popular science published anonymously in 1844 that advocated an evolutionary origin for the solar system, the earth, and living things.^[46] Wallace wrote to Henry Bates in 1845: Robert Chambers (10 July 1802 â€“ 17 March 1871), Scottish author and publisher, was born in Peebles. ... Vestiges of the Natural History of Creation was a book published anonymously in England in 1844. ... Henry Bates was a California politician. ...

Wallace deliberately planned some of his field work to test the hypothesis that under an evolutionary scenario closely related species should inhabit neighbouring territories.^[41] During his work in the Amazon basin he came to realize that geographical barriers—such as the Amazon and its major tributaries—often separated the ranges of closely allied species, and he included these observations in his 1853 paper "On the Monkeys of the Amazon".^[48] Near the end of the paper he asks the question "Are very closely allied species ever separated by a wide interval of country?"

In February 1855, while working in the state of Sarawak on the island of Borneo, Wallace wrote "On the Law Which has Regulated the Introduction of Species", a paper which was published in the Annals and Magazine of Natural History in September 1855. In this paper he gathered and enumerated general observations regarding the geographic and geologic distribution of species (biogeography). His conclusion that "Every species has come into existence coincident both in space and time with a closely allied species" has come to be known as the "Sarawak Law". Wallace thus answered the question he had posed in his earlier paper on the monkeys of the Amazon river basin. Although it contained no mention of any possible mechanisms for evolution, this paper foreshadowed the momentous paper he would write three years later.^[49] State motto: Bersatu, Berusaha, Berbakti State anthem: Ibu Pertiwiku Capital Kuching Ruling party Barisan Nasional - Yang di-Pertua Negeri Abang Muhammad Salahuddin - Ketua Menteri Abdul Taib Mahmud History - Brunei Sultanate 19th century - Brooke dynasty 1841 - Japanese occupation 1941-1945 - British control 1946 - Accession into Malaysia 1963 Area - Total 124,450... It has been suggested that this article or section be merged with Kalimantan. ... The Journal of Natural History is a scientific journal published by Taylor and Francis focusing on entomology and zoology. ... Biogeography is the science which deals with patterns of species distribution and the processes that result in such patterns. ...

The paper shook Charles Lyell's belief that species were immutable. Although his friend Charles Darwin had written to him in 1842 expressing support for transmutation, Lyell had continued to be strongly opposed to the idea. Around the start of 1856 he told Darwin about Wallace's paper, as did Edward Blyth who thought it "Good! Upon the whole!… Wallace has, I think put the matter well; and according to his theory the various domestic races of animals have been fairly developed into species." Despite this hint, Darwin mistook Wallace's conclusion for the progressive creationism of the time and wrote that it was "nothing very new… Uses my simile of tree [but] it seems all creation with him." Lyell was more impressed, and opened a notebook on species where he grappled with the consequences, particularly for human ancestry. For the first time Darwin now spelt out the full details of natural selection to Lyell, and although Lyell could not agree, he urged Darwin to publish to establish priority. Darwin demurred at first, then began writing up a species sketch of his continuing work in May 1856.^[50] For other people of the same surname, and places and things named after Charles Darwin, see Darwin. ... Edward Blyth. ... Progressive creationism is a form of Old Earth creationism that accepts that new species have appeared successively over earths long history but that, to a greater or lesser degree, each species represents a fiat miracle (thus the creationism part), and that the first pair or representatives of species were... Darwins illustrations of beak variation in the finches of the GalÃ¡pagos Islands, which hold 13 closely related species that differ most markedly in the shape of their beaks. ...

Natural selection and Darwin

By February 1858 Wallace had been convinced by his biogeographical research in the Malay Archipelago of the reality of evolution. As he later wrote in his autobiography: The publication of Darwins theory followed on from the development of Darwins theory of evolution and culminated in the publication of his book On the Origin of Species. ... World map depicting Malay Archipelago The Malay Archipelago is a vast archipelago located between mainland Southeastern Asia (Indochina) and Australia. ...

According to his autobiography, it was while he was in bed with a fever that Wallace thought about Thomas Malthus's idea of positive checks on human population growth, and came up with the idea of natural selection.^[52] Wallace said in his autobiography that he was on the island of Ternate at the time, but historians have questioned this, saying that on the basis of the collection registries he wrote at the time, he was more likely to have been on the island of Gilolo.^[53] Wallace describes it as follows: Thomas Robert Malthus, FRS (13th February, 1766 â€“ 29th December, 1834), was an English demographer and political economist. ... Darwins illustrations of beak variation in the finches of the GalÃ¡pagos Islands, which hold 13 closely related species that differ most markedly in the shape of their beaks. ... A 1720 depiction of Ternate. ...

Wallace had once briefly met Darwin, and was one of the correspondents whose observations Darwin used to support his own theories. Although Wallace's first letters to Darwin have been lost, he carefully kept the letters he received.^[55] In the first letter dated 1 May 1857, Darwin commented that Wallace's letter of October 10th which he'd recently received as well as Wallace's paper "On the Law that has regulated the Introduction of New Species" of 1855 showed that they were both thinking alike and to some extent reaching similar conclusions, and said that he was preparing his own work for publication in about two years time.^[56] The second letter of 22 December 1857, said how glad he was that Wallace was theorising about distribution, adding that "without speculation there is no good and original observation" while commenting that "I believe I go much further than you".^[57] Wallace trusted Darwin's opinion on the matter, and sent him his February 1858 essay, "On the Tendency of Varieties to Depart Indefinitely From the Original Type", with the request that Darwin would review it and pass it on to Charles Lyell if he thought it worthwhile.^[58] On 18 June 1858, Darwin received the manuscript from Wallace. While Wallace's essay did not employ Darwin's term "natural selection", it did outline the mechanics of an evolutionary divergence of species from similar ones due to environmental pressures. In this sense, it was very similar to the theory that Darwin had worked on for twenty years, but had yet to publish. Darwin sent the manuscript to Charles Lyell with a letter saying "he could not have made a better short abstract! Even his terms now stand as heads of my chapters… he does not say he wishes me to publish, but I shall, of course, at once write and offer to send to any journal."^[59] Distraught about the illness of his baby son, Darwin put the problem to Charles Lyell and Joseph Hooker who decided to publish the essay in a joint presentation together with unpublished writings which highlighted Darwin's priority. Wallace's essay was presented to the Linnean Society of London on 1 July 1858, along with excerpts from an essay which Darwin had disclosed privately to Hooker in 1847 and a letter Darwin had written to Asa Gray in 1857.^[60] Image File history File links Size of this preview: 387 Ã— 599 pixelsFull resolution (445 Ã— 689 pixel, file size: 41 KB, MIME type: image/jpeg) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links Size of this preview: 387 Ã— 599 pixelsFull resolution (445 Ã— 689 pixel, file size: 41 KB, MIME type: image/jpeg) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Darwins illustrations of beak variation in the finches of the GalÃ¡pagos Islands, which hold 13 closely related species that differ most markedly in the shape of their beaks. ... For other people of the same surname, and places and things named after Charles Darwin, see Darwin. ... is the 121st day of the year (122nd in leap years) in the Gregorian calendar. ... 1857 was a common year starting on Thursday (see link for calendar). ... December 22 is the 356th day of the year (357th in leap years) in the Gregorian calendar. ... 1857 was a common year starting on Thursday (see link for calendar). ... Two scientific papers; On the Tendency of Species to form Varieties by Alfred Russel Wallace and on the Perpetuation of Varieties and Species by Natural Means of Selection by Charles Darwin were presented to the Linnean Society of London in 1858 that first publicised Darwin — Wallace theory of evolution... Charles Lyell The frontispiece from Principles of Geology Sir Charles Lyell, 1st Baronet, KT, (November 14, 1797 â€“ February 22, 1875), Scottish lawyer, geologist, and populariser of uniformitarianism. ... is the 169th day of the year (170th in leap years) in the Gregorian calendar. ... 1858 (MDCCCLVIII) is a common year starting on Friday of the Gregorian calendar (or a common year starting on Sunday of the 12-day-slower Julian calendar). ... Charles Lyell The frontispiece from Principles of Geology Sir Charles Lyell, 1st Baronet, KT, (November 14, 1797 â€“ February 22, 1875), Scottish lawyer, geologist, and populariser of uniformitarianism. ... Joseph Dalton Hooker Joseph Dalton Hooker Sir Joseph Dalton Hooker, GCSI, OM, FRS, MD (June 30, 1817 â€“ December 10, 1911) was an English botanist and traveller. ... The Linnean Society of London is the worlds premier society for the study and dissemination of taxonomy. ... is the 182nd day of the year (183rd in leap years) in the Gregorian calendar. ... 1858 (MDCCCLVIII) is a common year starting on Friday of the Gregorian calendar (or a common year starting on Sunday of the 12-day-slower Julian calendar). ... Asa Gray (1810-1888) Asa Gray (November 18, 1810 - January 30, 1888) is considered the most important American botanist of the 19th century. ...

Wallace accepted the arrangement after the fact, grateful that he had been included at all. Darwin's social and scientific status was at that time far greater than Wallace's, and it was unlikely that Wallace's views on evolution would have been taken as seriously. Lyell and Hooker's arrangement relegated Wallace to the position of co-discoverer, and he was not the social equal of Darwin or the other elite British natural scientists. However, the joint reading of their papers on natural selection linked Wallace's name to that of the more eminent Darwin. This, combined with Darwin's (as well as Hooker's and Lyell's) advocacy on his behalf, gave Wallace much greater access to the highest levels of British science than he had previously enjoyed.^[61] The reaction to the reading was muted, with the president of the Linnean remarking in May 1859 that the year had not been marked by any striking discoveries,^[62] but with Darwin's publication of The Origin of Species later in 1859 its significance became apparent. When Wallace returned to England, he met Darwin and the two remained friendly afterwards. Charles Darwins Origin of Species (publ. ...

After the publication of Darwin’s Origin of Species Wallace became one of its staunchest defenders. In one incident in 1863 that particularly pleased Darwin, Wallace published the short paper "Remarks on the Rev. S. Haughton's Paper on the Bee's Cell, And on the Origin of Species" in order to utterly demolish a paper by a professor of geology at the University of Dublin that had sharply criticized Darwin’s comments in the Origin on how hexagonal honey bee cells could have evolved through natural selection.^[63] Another notable defence of the Origin was "Creation by Law", a review Wallace wrote in 1867 for The Quarterly Journal of Science of the book The Reign of Law, which had been written by the Duke of Argyle as a refutation of natural selection.^[64] After an 1870 meeting of the British Association Wallace wrote to Darwin complaining that there were "no opponents left who know anything of natural history, so that there are none of the good discussions we used to have."^[65] The 1859 edition of On the Origin of Species First published in 1859, The Origin of Species (full title On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) by British naturalist Charles Darwin is one of the pivotal... The British Association or the British Association for the Advancement of Science or the BA is a learned society with the object of promoting science, directing general attention to scientific matters, and facilitating intercourse between scientific workers. ...

Differences between Darwin's and Wallace's ideas on natural selection

Historians of science have noted that while Darwin considered the ideas in Wallace's paper to be essentially the same as his own, there were differences.^[66] Darwin emphasized competition between individuals of the same species to survive and reproduce, whereas Wallace emphasized ecological pressure on varieties and species forcing them to become adapted to their local environment or become extinct.^[67]^[68] It has been suggested that Wallace's emphasis on the importance of adaptation to the environment for survival and Darwin's emphasis on competition between individuals of the same species was at the root of their disagreement over the importance of sexual selection.^[69] Illustration from The Descent of Man and Selection in Relation to Sex by Charles Darwin showing the Tufted Coquette Lophornis ornatus, female on left, ornamented male on right. ...

Others have noted that another difference was that Wallace appeared to have envisioned natural selection as a kind of feedback mechanism keeping species and varieties adapted to their environment.^[70] They point to a largely overlooked passage of Wallace's famous 1858 paper:

The cybernetician and anthropologist Gregory Bateson would observe in the 1970s that though seeing it only as an illustration, Wallace had "probably said the most powerful thing that’d been said in the 19^th Century".^[71] Bateson revisited the topic in his 1979 book Mind and Nature: A Necessary Unity, and other scholars have continued to explore the connection between natural selection and systems theory.^[70] Cybernetics is the study of feedback and derived concepts such as communication and control in living organisms, machines and organisations. ... Gregory Bateson (9 May 1904â€“4 July 1980) was a British anthropologist, social scientist, linguist and cyberneticist whose work intersected that of many other fields. ... This article cites its sources but does not provide page references. ...

Warning colouration and sexual selection

In 1867 Darwin wrote to Wallace about a problem he was having understanding how some caterpillars could have evolved conspicuous colour schemes. Darwin had come to believe that sexual selection, an agency to which Wallace didn’t attribute the same importance as Darwin did, explained many conspicuous animal colour schemes. However, Darwin realized that this could not apply to caterpillars. Wallace responded that he and Bates had observed that many of the most spectacular butterflies had a peculiar odour and taste, and that he had been told by John Jenner Weir that birds would not eat a certain kind of common white moth because they found it unpalatable. "Now, as the white moth is as conspicuous at dusk as a coloured caterpillar in the daylight", Wallace wrote back to Darwin that it seemed likely that the conspicuous colour scheme served as a warning to predators and thus could have evolved through natural selection. Darwin was impressed by the idea. At a subsequent meeting of the Entomological Society Wallace asked for any evidence anyone might have on the topic. In 1869 Weir published data from experiments and observations involving brightly coloured caterpillars that supported Wallace’s idea. Warning colouration was one of a number of contributions Wallace made in the area of the evolution of animal colouration in general and the concept of protective colouration in particular.^[72] It was also part of a life long disagreement Wallace had with Darwin over the importance of sexual selection. In his 1878 book Tropical Nature and Other Essays he wrote extensively on the colouration of animals and plants and proposed alternative explanations for a number of cases Darwin had attributed to sexual selection.^[73] He revisited the topic at length in his 1889 book Darwinism. For other people of the same surname, and places and things named after Charles Darwin, see Darwin. ... Illustration from The Descent of Man and Selection in Relation to Sex by Charles Darwin showing the Tufted Coquette Lophornis ornatus, female on left, ornamented male on right. ... Henry Bates was a California politician. ... John Jenner Weir FLS, FZS (1822 - 1894) was a British civil servant, amateur entomologist and ornithologist. ... The bright colours of this Yellow-winged Darter dragonfly serve as a warning to predators of its noxious taste. ... Much interest attaches in modern biology to the questions involved in the colours of animals. ...

Wallace effect

In 1889 Wallace wrote the book Darwinism which explained and defended natural selection. In it he proposed the hypothesis that natural selection could drive the reproductive isolation of two varieties by encouraging the development of barriers against hybridization. Thus contributing to the development of new species. He suggested the following scenario. When two populations of a species had diverged beyond a certain point, each adapted to particular conditions, hybrid offspring would be less well adapted than either parent form, and at that point natural selection will tend to eliminate the hybrids. Furthermore, under such conditions natural selection would favour the development of barriers to hybridization, as individuals that avoided hybrid matings would tend to have more fit offspring, and thus contribute to the reproductive isolation of the two incipient species. This idea came to be known as the Wallace effect.^[74] Wallace had suggested to Darwin that natural selection could play a role in preventing hybridization in private correspondence as early as 1868, but had not worked it out to this level of detail.^[75] It continues to be a topic of research in evolutionary biology today with both computer simulation and empirical results supporting its validity.^[76] In 1889, A. R. Wallace wrote the book Darwinism, which explained and defended natural selection. ...

Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Darwins illustrations of beak variation in the finches of the GalÃ¡pagos Islands, which hold 13 closely related species that differ most markedly in the shape of their beaks. ...

Application of theory to man, and role of teleology in evolution

In 1864 Wallace published a paper, "The Origin of Human Races and the Antiquity of Man Deduced from the Theory of 'Natural Selection'", applying the theory to mankind. Darwin had not yet publicly addressed the subject, although Thomas Huxley had in Evidence as to Man's Place in Nature. Thomas Henry Huxley, FRS (4 May 1825 â€“ 29 June 1895) [1] was an English biologist, known as Darwins Bulldog for his advocacy of Charles Darwins theory of evolution. ... Evidence as to Mans Place in Nature is an 1863 book by Thomas Henry Huxley and the first to discuss human evolution, coming five years after Charles Darwin announced his general theory, and four years after the publication of Darwins Origin. ...

Shortly afterwards Wallace became a spiritualist. At about the same time he began to maintain that natural selection cannot account for mathematical, artistic, or musical genius, as well as metaphysical musings, and wit and humour. He eventually said that something in "the unseen universe of Spirit" had interceded at least three times in history: The first was the creation of life from inorganic matter. The second was the introduction of consciousness in the higher animals, and the third was the generation of the higher mental faculties in mankind. He also believed that the raison d'être of the universe was the development of the human spirit.^[77] These views greatly disturbed Darwin, who argued that spiritual appeals were not necessary and that sexual selection could easily explain apparently non-adaptive mental phenomena. While some historians have concluded that Wallace's belief that natural selection was insufficient to explain the development of consciousness and the human mind was directly caused by his adoption of spiritualism, other Wallace scholars have disagreed, and some maintain that Wallace never believed natural selection applied to those areas.^[78]^[79] Reaction to Wallace's ideas on this topic among leading naturalists at the time varied. Charles Lyell endorsed Wallace's views on human evolution rather than Darwin's.^[80]^[81] However, many, including Huxley, Hooker and Darwin himself, were critical of Wallace.^[82] As one historian of science has pointed out, Wallace's views in this area were at odds with two major tenets of the emerging Darwinian philosophy, which were that evolution was not teleological and that it was not anthropocentric.^[83] By 1853, when the popular song Spirit Rappings was published, Spiritualism was the object of intense curiosity. ... Look up raison dÃªtre in Wiktionary, the free dictionary. ... Illustration from The Descent of Man and Selection in Relation to Sex by Charles Darwin showing the Tufted Coquette Lophornis ornatus, female on left, ornamented male on right. ... Charles Lyell The frontispiece from Principles of Geology Sir Charles Lyell, 1st Baronet, KT, (November 14, 1797 â€“ February 22, 1875), Scottish lawyer, geologist, and populariser of uniformitarianism. ... Teleology is the philosophical study of purpose (from the Greek teleos, perfect, complete, which in turn comes from telos, end, result). ... Anthropocentrism (Greek άνθρωπος, anthropos, man, human being, κέντρον, kentron, center) is the practice, conscious or otherwise, of regarding the existence and/or concerns of human beings as the central fact of the universe. ...

Assessment of Wallace's role in history of evolutionary theory

In many accounts of the history of evolution, Wallace is mentioned only in passing as simply being the "stimulus" to publication of Darwin's own theory.^[84] In reality, Wallace developed his own distinct evolutionary views which diverged from Darwin's, and was considered by many (especially Darwin) to be a leading thinker on evolution in his day, whose ideas could not be ignored. One historian of science has pointed out that through both private correspondence and published works Darwin and Wallace exchanged knowledge and stimulated each other's ideas and theories over an extended period.^[85] Wallace is the most cited naturalist in Darwin's Descent of Man, often in strong disagreement.^[86] Wallace remained an ardent defender of natural selection for the rest of his life. By the 1880s, evolution was widely accepted in scientific circles, but Wallace and August Weismann were nearly alone among prominent biologists in believing that natural selection was the major driving force behind it.^[87]^[88] In 1889 Wallace published the book Darwinism as a response to the scientific critics of natural selection.^[89] Of all Wallace's books it is the most cited by scholarly publications.^[90] The Descent of Man and Selection in Relation to Sex by British naturalist Charles Darwin was first published in 1871. ... August Weismann Friedrich Leopold August Weismann (b. ...

Spiritualism

Wallace was an enthusiast of phrenology,^[92] and early in his career he experimented with hypnosis; then known as mesmerism. He used some of his students in Leicester as subjects with considerable success.^[93] When he began his experiments with mesmerism the topic was very controversial and early experimenters, such as John Elliotson, had been harshly criticized by the medical and scientific establishment.^[94] Wallace drew a connection between his experiences with mesmerism and his later investigations into spiritualism. In 1893 he wrote: A 19th century phrenology chart. ... Professor Charcot was well-known for showing, during his lessons at the SalpÃªtriÃ¨re hospital, hysterical woman patients â€“ here, his favorite patient, Blanche (Marie) Wittman, supported by Joseph BabiÅ„ski. ... John Elliotson (October 29, 1791 - July 29, 1868) was an English physician, born in Southwark, London. ... By 1853, when the popular song Spirit Rappings was published, Spiritualism was the object of intense curiosity. ...

Wallace began investigating spiritualism in the summer of 1865, possibly at the urging of his older sister Fanny Sims who had been involved with it for some time.^[96] After reviewing the literature on the topic and attempting to test the phenomena he witnessed at séances, he came to accept that the belief was connected to a natural reality. For the rest of his life he remained convinced that at least some séance phenomena were genuine, no matter how many accusations of fraud sceptics made, or how much evidence of trickery was produced. Historians and biographers have disagreed about which factors most influenced his adoption of spiritualism. It has been suggested by one biographer that the emotional shock he had received a few months earlier when his first fiancée broke their engagement contributed to his receptiveness to spiritualism.^[97] Other scholars have preferred to emphasize instead Wallace's desire to find rational and scientific explanations for all phenomena, both material and non material, of the natural world and of human society.^[98]^[94] A sÃ©ance (pronounced: ) is, on its most basic level, an attempt to communicate with the dead. ...

Spiritualism appealed to many educated Victorians who no longer found traditional religious doctrine such as that of the Church of England acceptable, but who were unsatisfied with the completely materialistic and mechanical view of the world that was increasingly emerging from 19th century science.^[99] However, several scholars who have researched Wallace's views in depth have emphasized that for him spiritualism was a matter of science and philosophy rather than religious belief.^[98]^[94] Other prominent 19th century intellectuals involved with spiritualism included the social reformer Robert Owen, who was one of Wallace’s early idols,^[100] the physicists William Crookes and Lord Rayleigh, the mathematician Augustus De Morgan, and the Scottish publisher Robert Chambers.^[101]^[102] Queen Victoria (shown here on the morning of her Accession to the Throne, June 20, 1837) gave her name to the historic era. ... The Church of England logo since 1998 The Church of England is the officially established Christian church[1] in England, and acts as the mother and senior branch of the worldwide Anglican Communion, as well as a founding member of the Porvoo Communion. ... Robert Owen (May 14, 1771 â€“ November 17, 1858) was a Welsh socialist and social reformer. ... Sir William Crookes, OM, FRS (17 June 1832 â€“ 4 April 1919) was an English chemist and physicist. ... See also Rayleigh fading Rayleigh scattering Rayleigh number Rayleigh waves Rayleigh-Jeans law External links Nobel website bio of Rayleigh About John William Strutt MacTutor biography of Lord Rayleigh Categories: People stubs | 1842 births | 1919 deaths | Nobel Prize in Physics winners | Peers | British physicists | Discoverer of a chemical element ... The tone or style of this article or section may not be appropriate for Wikipedia. ... Robert Chambers (10 July 1802 â€“ 17 March 1871), Scottish author and publisher, was born in Peebles. ...

Wallace's very public advocacy of spiritualism and his repeated defence of spiritualist mediums against allegations of fraud in the 1870s damaged his scientific reputation. It strained his relationships with previously friendly scientists such as Henry Bates, Thomas Huxley, and even Darwin who felt he was overly credulous. Others, such as the physiologist William Benjamin Carpenter and zoologist E. Ray Lankester became openly and publicly hostile to Wallace over the issue. Wallace and other scientists who defended spiritualism, notably William Crookes, were subject to much criticism from the press, with The Lancet as the leading English medical journal of the time being particularly harsh. The controversy affected the public perception of Wallace’s work for the rest of his career.^[103] When in 1879 Darwin first tried to rally support among naturalists to get a civil pension awarded to Wallace, Joseph Hooker responded: Henry Bates was a California politician. ... Thomas Henry Huxley, FRS (4 May 1825 â€“ 29 June 1895) [1] was an English biologist, known as Darwins Bulldog for his advocacy of Charles Darwins theory of evolution. ... William Benjamin Carpenter (October 29, 1813 - November 10, 1885) was an English physiologist and naturalist. ... Sir Edwin Ray Lankester (1847 - 1929) was a British zoologist. ... Sir William Crookes, OM, FRS (17 June 1832 â€“ 4 April 1919) was an English chemist and physicist. ... The Lancet is one of the oldest and most respected peer-reviewed medical journals in the world, published weekly by Elsevier, part of Reed Elsevier. ... Joseph Hooker (November 13, 1814 â€“ October 31, 1879), known as Fighting Joe, was a career U.S. Army officer and a major general in the Union Army during the American Civil War. ...

Biogeography and ecology

In 1872, at the urging of many of his friends including Darwin, Philip Sclater, and Alfred Newton, Wallace began research for a general review of the geographic distribution of animals. He was unable to make much progress initially, in part because classification systems for many types of animals were in flux at the time.^[106] He resumed the work in earnest in 1874 after the publication of a number of new works on classification.^[107] Extending the bird system developed by Sclater—which divided the earth into 6 separate geographic regions for describing species distribution—to cover mammals, reptiles and insects as well, Wallace created the basis for the zoogeographic regions still in use today. He discussed all of the factors then known to influence the current and past geographic distribution of animals within each geographical region. These included the effects of the appearance and disappearance of land bridges (such as the one currently connecting North America and South America), and the effects of periods of increased glaciation. He provided maps that displayed factors, such as elevation of mountains, depths of oceans, and the character of regional vegetation, that affected the distribution of animals. He also summarized all the known families and genera of the higher animals and listed their known geographic distributions. The text was organized so that it would be easy for a traveler to use to learn what animals could be found in a particular location. The resulting two volume work, The Geographical Distribution of Animals, was published in 1876 and would serve as the definitive text on zoogeography for the next 80 years.^[108] Image File history File links Size of this preview: 800 Ã— 377 pixel Image in higher resolution (1524 Ã— 719 pixel, file size: 236 KB, MIME type: image/jpeg) Frontpiece to Alfred Russel Wallaces book The Geographical Distribution of Animals File links The following pages on the English Wikipedia link to... Image File history File links Size of this preview: 800 Ã— 377 pixel Image in higher resolution (1524 Ã— 719 pixel, file size: 236 KB, MIME type: image/jpeg) Frontpiece to Alfred Russel Wallaces book The Geographical Distribution of Animals File links The following pages on the English Wikipedia link to... Philip Lutley Sclater (November 4, 1829 - June 27, 1913) was an English lawyer and zoologist. ... For the SOE field agent, see Alfred Newton (SOE). ... An ecozone or biogeographic realm is the largest scale biogeographic division of the earths surface based on the historic and evolutionary distribution patterns of plants and animals. ... Zoogeography is the branch of the science of biogeography that is concerned with the geographic distribution of animal species. ...

In 1880 Wallace published the book Island Life as a sequel to The Geographical Distribution of Animals. It surveyed the distribution of both animal and plant species on islands. Wallace classified islands into three different types. Oceanic islands, such as the Galapagos and Hawaiian Islands (then known as the Sandwich Islands) formed in mid ocean and had never been part of any large continent. Such islands were characterized by a complete lack of terrestrial mammals and amphibians, and their inhabitants (with the exceptions of migratory birds and species introduced by human activity) were typically the result of accidental colonization and subsequent evolution. He divided continental islands into two separate classes depending on whether they had recently been part of a continent (like Britain) or much less recently (like Madagascar) and discussed how that difference affected the flora and fauna. He talked about how isolation affected evolution and how that could result in the preservation of classes of animals, such as the lemurs of Madagascar that were remnants of once widespread continental faunas. He extensively discussed how changes of climate, particularly periods of increased glaciation, may have affected the distribution of flora and fauna on some islands, and the first portion of the book discusses possible causes of these great ice ages. Island Life was considered a very important work at the time of its publication, and was discussed extensively in scientific circles both in published reviews and in private correspondence.^[109] NASA Satellite photo of the Galápagos archipelago. ... Map of the Hawaiian Islands, a chain of islands that stretches 2,400 km in a northwesterly direction from the southern tip of the Island of Hawaiâ€˜i. ... Families Cheirogaleidae Lemuridae Megaladapidae Indridae Lemurs are part of a class of primates known as prosimians, and make up the infraorder Lemuriformes. ... A glaciation (a created composite term meaning Glacial Period, referring to the Period or Era of, as well as the process of High Glacial Activity), often called an ice age, is a geological phenomenon in which massive ice sheets form in the Arctic and Antarctic and advance toward the equator. ... Variations in CO2, temperature and dust from the Vostok ice core over the last 400 000 years For the animated movie, see Ice Age (movie). ...

Environmental issues

Wallace’s extensive work in biogeography made him aware of the impact of human activities on the natural world. In Tropical Nature and Other Essays (1878) he warned about the dangers of deforestation and soil erosion, especially in tropical climates prone to heavy rainfall. Noting the complex interactions between vegetation and climate, he warned that the extensive clearing of rainforest for coffee cultivation in Ceylon (Sri Lanka) and India would adversely impact the climate in those countries and lead to their eventual impoverishment due to soil erosion.^[110] In Island Life Wallace again talked about deforestation and also the impact of invasive species. He wrote the following about the impact of European colonization on the island of St. Helena: In meteorology, precipitation is any kind of water that falls from the sky as part of the weather. ... The Daintree Rainforest in Queensland, Australia. ... Lantana invasion of abandoned citrus plantation; Moshav Sdey Hemed, Israel The term invasive species refers to a subset of introduced species or non-indigenous species that are rapidly expanding outside of their native range. ...

Other controversies

Flat earth wager

In 1870 a flat earth proponent named John Hampden offered a £500 wager in a magazine advertisement to anyone who could demonstrate a convex curvature in a body of water such as a river, canal, or lake. Wallace, intrigued by the challenge and short of money at the time, designed an experiment where he set up two objects along a six mile stretch of canal both at the same height above the water as, and in a straight line with, a telescope he mounted on a bridge. When seen through the telescope one object appeared higher than the other, showing the curvature of the earth. The judge for the wager, the editor of Field magazine, declared Wallace the winner, but Hampden refused to accept the result. He sued Wallace and launched a campaign, which persisted for several years, of writing letters to various publications and to organizations of which Wallace was a member denouncing him as a swindler and a thief. Wallace won multiple libel suits against Hampden, but the resulting litigation cost Wallace more than the amount of the wager and the controversy frustrated him for years.^[112] The Bedford Level Experiment was a series of observations carried out along a six-mile length of the Bedford Level (the Old Bedford River), Norfolk, England, during the nineteenth and early twentieth centuries. ... For the 1984 album by Thomas Dolby, see The Flat Earth. ... GBP may be: short for Game Boy Player the ISO currency code for the British Pound Sterling. ...

Anti-vaccination campaign

In the early 1880s Wallace was drawn into the debate over mandatory smallpox vaccination. Wallace originally saw the issue as a matter of personal liberty, but after studying some of the statistics provided by anti-vaccination activists he began to question the efficacy of vaccination. At the time the germ theory of disease was very new and far from universally accepted, and no one knew enough about the human immune system to understand why vaccination worked. When Wallace did some research he discovered some cases where supporters of vaccination had used questionable statistics. Always suspicious of authority, Wallace became convinced that reductions in the incidence of smallpox that had been attributed to vaccination were in fact due to better hygiene and improvements in public sanitation, and that physicians had a vested interest in promoting vaccination.^[113] Wallace and other anti-vaccinationists pointed out that vaccination, which was often done in a sloppy unsanitary manner, could be dangerous.^[114] In 1890 Wallace gave evidence before a Royal Commission investigating the controversy. When the commission examined the material he had submitted to support his testimony, they found errors including some questionable statistics. The Lancet stated that Wallace and the other anti-vaccination activists were being selective in their choice of statistics, ignoring large quantities of data inconsistent with their position. The commission found that smallpox vaccination was effective and should remain compulsory, though they did recommend some changes in procedures to improve safety and that the penalties for people who refused to comply be made less severe. Years later, in 1898, Wallace wrote a pamphlet attacking the commission’s findings, and it in turn was attacked by The Lancet which stated that it contained many of the same errors as his evidence given to the commission.^[113] The germ theory of disease, also called the pathogenic theory of medicine, is a theory that proposes that microorganisms are the cause of many diseases. ... A scanning electron microscope image of a single neutrophil (yellow), engulfing anthrax bacteria (orange). ... In states that are Commonwealth Realms a Royal Commission is a major government public inquiry into an issue. ... The Lancet is one of the oldest and most respected peer-reviewed medical journals in the world, published weekly by Elsevier, part of Reed Elsevier. ...

Martian canals

In 1907 Wallace wrote the short book Is Mars Habitable? to criticize the claims made by Percival Lowell that there were Martian canals built by intelligent beings. Wallace did months of research, consulted various experts, and produced his own scientific analysis of the Martian climate and atmospheric conditions.^[115] Among other things Wallace pointed out that spectroscopic analysis had shown no signs of water vapour in the Martian atmosphere, that Lowell's analysis of Mars's climate was seriously flawed and badly overestimated the surface temperature, and that low atmospheric pressure would make liquid water, let alone a planet girding irrigation system, impossible.^[116] Wallace originally became interested in the topic because his anthropocentric philosophy inclined him to believe that man would likely be unique in the universe.^[117] Percival Lowell (March 13, 1855 â€“ November 12, 1916) was an author, mathematician, and esteemed astronomer who fueled speculation that there were canals on Mars, founded the Lowell Observatory in Flagstaff, Arizona, and formed the beginning of the work and theories that led to the discovery of Pluto 14 years after... Map of Mars by Giovanni Schiaparelli. ... Spectroscopy is the study of spectra, ie. ... Anthropocentrism (Greek άνθρωπος, anthropos, man, human being, κέντρον, kentron, center) is the practice, conscious or otherwise, of regarding the existence and/or concerns of human beings as the central fact of the universe. ...

Legacy and historical perception

As a result of his writing, Wallace had been for many years a well known figure both as a scientist and as a social activist, sought out by journalists and others for his views.^[118] He received honorary doctorates, and a number of professional honours such as election to the Royal Society, the Copley Medal, and one honour from the British state: the Order of Merit. Above all, his role as the co-discoverer of natural selection and his work on zoogeography marked him out as an exceptional figure. He was undoubtedly one of the greatest natural history explorers. Despite this, his fame faded quickly after his death and for a long time he was treated as a relatively obscure figure in the history of science.^[119] A number of reasons have been suggested for this lack of attention, including his modesty, his willingness to champion unpopular causes without regard for his own reputation, and the discomfort of much of the scientific community with some of his unconventional ideas. Recently, he has become a less obscure figure with the publication of several biographies on him and anthologies of his writings, as well as the creation of a web page dedicated to Wallace scholarship.^[120] A literary critic for New Yorker magazine observed that there have been at least five such biographies and two such anthologies published just since the year 2000.^[121] The premises of The Royal Society in London (first four properties only). ... The Copley Medal is a scientific award for work in any field of science, the highest award granted by the Royal Society of London. ... The Order of Merit is a British and Commonwealth Order bestowed by the Monarch. ...

Alfred Russel Wallace _ Project Gutenberg eText 14558 _ http://www. ... Alfred Russel Wallace _ Project Gutenberg eText 14558 _ http://www. ...

Awards, honours, and memorials

The Order of Merit is a British and Commonwealth Order bestowed by the Monarch. ... The premises of The Royal Society in London (first four properties only). ... The Royal Medals of the Royal Society of London were established by King George IV. They were further supported with certain changes to their conditions, by King William IV and Queen Victoria. ... The Copley Medal is a scientific award for work in any field of science, the highest award granted by the Royal Society of London. ... The Royal Geographical Society is a British learned society founded in 1830 with the name Geographical Society of London for the advancement of geographical science, under the patronage of King William IV. It absorbed the Association for Promoting the Discovery of the Interior Parts of Africa (founded by Sir Joseph... The British Association or the British Association for the Advancement of Science or the BA is a learned society with the object of promoting science, directing general attention to scientific matters, and facilitating intercourse between scientific workers. ... GBP may be: short for Game Boy Player the ISO currency code for the British Pound Sterling. ... The premises of The Royal Society in London (first four properties only). ... Richard Hale School is an all-boys school located in Hertford, Hertfordshire in the south east of England. ... is the 305th day of the year (306th in leap years) in the Gregorian calendar. ... Year 1915 (MCMXV) was a common year starting on Friday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Thursday[1] of the 13-day-slower Julian calendar). ... Tycho crater on Earths moon. ... Mars is the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky. ... This article is about Earths moon. ...

Writings by Wallace

Wallace was an extremely prolific author. In 2002 a historian of science published a quantitative analysis of Wallace's publications. He found that Wallace had published 22 full length books and at least 747 shorter pieces, 508 of which were scientific papers (191 of them published in Nature). He further broke down the 747 short pieces by their primary subjects as follows. 29% were on biogeography and natural history, 27% were on evolutionary theory, 25% were social commentary, 12% were on Anthropology, and 7% were on spiritualism and phrenology.^[123] An online bibliography of Wallace's writings has more than 750 entries.^[18] Nature is one of the most prominent scientific journals, first published on 4 November 1869. ...

Selected books

Map from The Malay Archipelago showing Alfred Russel Wallaces travels Illustration of a flying frog from The Malay Archipelago The Malay Archipelago is a book by the British naturalist Alfred Russel Wallace that chronicles his scientific exploration, during the eight year period 1854 to 1862, of the southern portion...

Selected papers

A more comprehensive list of Wallace's publications that are available online, as well as a full bibliography of all of Wallace's writings^[18], has been compiled by the historian Charles H. Smith at the The Alfred Russel Wallace Page. Wallaces line between Australasian and Southeast Asian fauna. ... Charles H. Smith, born 30 September 1950 at Winsted, Connecticut USA, is a professor and science librarian at Western Kentucky University (WKU). ...

Contents

Biography

Early life

Exploration and study of the natural world

Return to England, marriage and children

Financial struggles

Social activism

Death

Theory of evolution

Early evolutionary thinking

Natural selection and Darwin

Differences between Darwin's and Wallace's ideas on natural selection

Warning colouration and sexual selection

Wallace effect

Application of theory to man, and role of teleology in evolution

Assessment of Wallace's role in history of evolutionary theory

Spiritualism

Biogeography and ecology

Environmental issues

Other controversies

Flat earth wager

Anti-vaccination campaign

Martian canals

Legacy and historical perception

Awards, honours, and memorials

Writings by Wallace

Selected books

Selected papers

See also

Notes

References

Further reading

External links

Contents

Biography GA_googleFillSlot("encyclopedia_square");

Early life

Exploration and study of the natural world

Return to England, marriage and children

Financial struggles

Social activism

Death

Theory of evolution

Early evolutionary thinking

Natural selection and Darwin

Differences between Darwin's and Wallace's ideas on natural selection

Warning colouration and sexual selection

Wallace effect

Application of theory to man, and role of teleology in evolution

Assessment of Wallace's role in history of evolutionary theory

Spiritualism

Biogeography and ecology

Environmental issues

Other controversies

Flat earth wager

Anti-vaccination campaign

Martian canals

Legacy and historical perception

Awards, honours, and memorials

Writings by Wallace

Selected books

Selected papers

See also

Notes

References

Further reading

External links

Biography