Bicycle Day is April 19, commemorating April 19, 1943, when Dr. Albert Hofmann first took LSD intentionally. Three days earlier, he had absorbed a small amount of the drug either through his fingertips or by accidentally ingesting it. On Bicycle Day, he took ?? ยตg of LSD intentionally and, fearing he had made himself ill, cycled home from his lab. During his bicycle ride, he experienced the effects of LSD, making this the date of the first ever deliberate acid trip. He wrote about his experiments and experience on April 22, which was later put into his book LSD: My Problem Child. April 19 is the 109th day of the year in the Gregorian calendar (110th in leap years). ... April 19 is the 109th day of the year in the Gregorian calendar (110th in leap years). ... 1943 (MCMXLIII) was a common year starting on Friday (the link is to a full 1943 calendar). ... Dr. Dr. Albert Hofmann (born January 11, 1906) is a prominent Swiss scientist best known as the father of LSD. He was born in Baden, Switzerland, and studied chemistry at the University of Zürich. ... For other articles with similar names, see LSD (disambiguation). ... BIC pen cap, about 1 gram. ... April 22 is the 112th day of the year in the Gregorian calendar (113th in leap years). ...
Reading
Hofmann, Albert (1981): LSD, My Problem Child. McGraw-Hill. ISBN 0-07-029325-2
No bicycle shall be sold by a duly authorized agent unless a valid bicycle license or bicycle license renewal indicia has been attached thereto prior to sale or unless a bicycle license or license renewal indicia is sold and issued to the purchaser and attached to the bicycle at the time of sale.
Renewal of a bicycle license shall be indicated by the presence of a supplementary adhesive device affixed by a duly authorized agent to the bicycle or bicycle frame on or near the indicia already appearing on said bicycle or bicycle frame.
Whenever the owner of a bicycle licensed pursuant to this section changes his or her address, that person shall, within 10 days, notify the Board of Police Commissioners of both the old and new address in writing.