GMELIN, Jon ANN GEORG (1709-1755), a distinguished naturalist, son of the chemist of the same name, was born at Tiibingen, June 12, 1709. Having taken his degree in medicine, lie in 1727 repaired to St Petersburg, where in 1731 he was appointed professor of chemistry and natural history. In 1733, by order of the empress Anna, lie joined • Deslisle, G. F. Muller, and Bebring in an expedition for the exploration of Siberia, which was penetrated as far as the Lena. He returned to St Petersburg in 1743. In 1749 he was chosen professor of botany and chemistry at Tubingen, where he died, May 20, 1755. Linnaeus named a genus of plants Gmelina in his honour.

His chief works are Flora Sibirt'ea (4 vole., St Petersburg, 174950), and Reisen. Derek Sibirien (4 vols., St Petersburg, 1752).