Images from Anatome Testudinis Europaeae (1819-21) by the German physician and naturalist Ludwig Heinrich Bojanus (1776–1827). Bojanus was born at Bouxwiller in Alsace and studied at Darmstadt and the University of Jena. In 1806 he became professor of veterinary medicine at the University of Vilnius, switching to comparative anatomy in 1824. As well as his anatomy of turtles, he was also the author of several scientific discoveries, including a glandular organ in bivalvular molluscs that is now known as organ of Bojanus, and the aurochs. In 1821, he was elected a foreign member of the Royal Swedish Academy of Sciences. (Wikipedia)