Thomas Horsfield, M. D., (1773 - 1859) was an American physician and naturalist. 1773 was a common year starting on Friday (see link for calendar). ... 1859 is a common year starting on Saturday. ... A physician is a person who practices medicine. ... Natural history is an umbrella term for what are now usually viewed as a number of distinct scientific disciplines. ...

Horsfield was born in Philadelphia and studied medicine. He worked as a doctor in Java for many years. The East India Company took control of the island from the Dutch in 1811, and Horsfield began to collect plants and animals on behalf of his friend Sir Thomas Stamford Raffles. In 1819 he was forced to leave the island due to ill health and became keeper and later curator of the East India Company's museum in Leadenhall Street, London. Philadelphia is a village located in Jefferson County, New York. ... Map of Java Java (Indonesian, Javanese, and Sundanese: Jawa) is an island of Indonesia, and the site of its capital city, Jakarta. ... The British East India Company, sometimes referred to as John Company, was a joint-stock company of investors, which was granted a Royal Charter by Elizabeth I on December 31, 1600, with the intent to favour trade privileges in India. ... Divisions Land plants (embryophytes) Non-vascular plants (bryophytes) Hepatophyta - liverworts Anthocerophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants Adiantum pedatum (a fern... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria Placozoa Subregnum Bilateria  Acoelomorpha  Orthonectida  Rhombozoa  Myxozoa  Superphylum Deuterostomia     Chordata (vertebrates, etc. ... Sir Thomas Stamford Bingley Raffles (6 July 1781 - 5 July 1826) was the founder of the city (now country) of Singapore, and is one of the best-known of the many Britons who created the largest empire the world has ever seen. ... Leadenhall Street is a principal street of the City of London. ... St. ...

Horsfield was appointed assistant secretary of the Zoological Society of London at its formation in 1826. The Zoological Society of London (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. ...

Horsfield wrote Zoological Researches in Java and the Neighbouring Islands (1824). He also classified a number of birds with Nicholas Aylward Vigors, most notably in their A description of the Australian birds in the collection of the Linnean Society; with an attempt at arranging them according to their natural affinities (Trans. Linn. Soc. Lond. (1827)). Nicholas Aylward Vigors (1785 – October 26, 1840) was an Irish zoologist and politician. ... The Linnean Society of London is the worlds premier society for the study and dissemination about taxonomy. ...

The Horsfield's Goshawk or the Chinese Sparrowhawk Accipiter soloensis is named after him.