Russian traveller and naturalist, born in November 1793, at Dorpat, where he died in May 1831. He was naturalist and physician to Otto von Kotzebues exploring expedition during 18151818. On his return he was appointed extraordinary professor of anatomy (1819) and director of the zoological museum of the university at Dorpat (1822), and in 18231826 he accompanied Kotzebue on his second voyage of discovery. He became ordinary professor of anatomy at Dorpat in 1828. Among his publications were the System der Akalephen (1829), and the Zoologischer Atlas (18291833). The botanical genus Eschscholtzia was named by Adelbert von Chamisso in his honour.