Say, Thomas (1787–1834), a United States naturalist. He wrote the first major American works on insects (American Entomology, 3 volumes, 1824–28) and shells (American Conchology, 2 volumes, 1830–34). Say was born in Philadelphia. He served as zoologist on the United States government expeditions, led by Stephen H. Long, to the Rocky Mountains (1819–20) and the source of the Minnesota River (1823). Say was curator of the American Philosophical Society, 1821–27, and professor of natural history at the University of Pennsylvania, 1822–28. He was a founding member of the Academy of Natural Sciences in Philadelphia.
You Might Also Like
Flagship species like leopards, whales and wolves grace wildlife calendars, bring in big conservation dollars and help regulate their ecosystems. But what about the tiny guys you won't find on your calendar? How important are they to Earth's biodiversity?
A wilderness becomes a grid work of streets, lights and skyscrapers. Every day, we remake the world a little more to our liking. What has that meant for the planet?