Hermann Emil Fischer proposes the structure of purine, a key component in many biomolecules, which he synthesizes in 1898; he also begins work on the chemistry of glucose and related sugars.[2]
First known case of artificial insemination by sperm donation: William H. Pancoast, a professor in Philadelphia, takes sperm from his "best looking" student to inseminate an anesthetized woman without her knowledge, not reported for 25 years.[10][11][12]
^Hardy, A. (August 1999). "Food, hygiene, and the laboratory. A short history of food poisoning in Britain, circa 1850-1950". Social History of Medicine. 12 (2): 293–311. doi:10.1093/shm/12.2.293. PMID11623930.
^At a medical congress in Heidelberg, Germany, September 15. Honegger, H.; Hessler, H. (September 1970). "[Discovery of local anesthesia by Karl Koller. I]". Klinische Monatsblätter für Augenheilkunde (in German). 157 (3). West Germany: 428–38. ISSN0023-2165. PMID4922411.
^Winter, Lumen; Degner, Glenn (1933). Minute Epics of Flight. New York: Grosset & Dunlap. pp. 49–50.
^Moseley, Brian (August 2007). "Smeaton's Tower". The Encyclopaedia of Plymouth History. Plymouth Data. Archived from the original on March 16, 2011. Retrieved February 13, 2015.