| Date | Text | |
|---|---|---|
12 Dec 1846
Charles Alexandre Lesueur |
death Charles Alexandre Lesueur Died 12 Dec 1846 at age 68 (born 1 Jan 1778). French naturalist and artist who is remembered for high quality natural history illustrations. He travelled to Australia under Nicolas Baudin on a scientific expedition (1800-04) and returned to France with collection of over 100,000 zoological specimens, including some 2,500 new species. In 1815, he began an association with William Maclure on a scientific excursion to the principal islands of the Lesser Antilles to make a study of the geology, followed by further work in the U.S. revising Maclure's geological maps. From 1816-37, while living in the U.S., he explored the Mississippi Valley. Lesueur followed a particular interest in ichthyology. He made the first scientific study of the archaeological prehistoric mounds in vicinity of New Harmony, Indiana. |
|
12 Dec 1846
Eugen Baumann |
birth Eugen Baumann Born 12 Dec 1846; died 3 Nov 1896 at age 49. German chemist who discovered that the thyroid gland was rich in iodine, an element not known before that to occur naturally in animal tissue, making the thyroid gland unique in being the only tissue to contain iodine. This led to the discovery of the iodine-containing thyroid hormone and to its treatment in thyroid disorders. This, his most important discovery, he made in the last year of his life, 1896. |
OnThisDay.net