498575 Chameleon, illustration from \'Historiae animalium liber II: De Quadrupedibus Oviparis\' by Conrad Gesner, published 1554 (engraving) by Swiss School, (16th century); Private Collection; (add.info.: Conrad Gessner (1516??565), Swiss naturalist and biologist. His \'Historiae Animalium\' is the first modern zoological work that attempts to describe all the animals known.); Swiss, out of copyright.