Olm or proteus, Proteus anguinus, vulnerable. Dorsal I, ventral II, and internal organs III. Handcoloured copperplate engraving from Carl Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1815. A 12-volume encyclopedia for children illustrated with almost 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830.
Olm or proteus, Proteus anguinus, vulnerable. Dorsal I, ventral II, and internal organs III. Handcoloured copperplate engraving from Carl Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1815. A 12-volume encyclopedia for children illustrated with almost 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830.