Fig. 20 in A History Of Herpetology At The American Museum Of Natural History

Fig. 20. An early aim of Dickerson and her preparators was to portray a synoptic series of the world's amphibians and reptiles, for which wax casting was used when possible. Top: Elegant 1911 wax casts of the European salamander Proteus [mistakenly called Amphiuma in Dickerson (1911c: 208), but correctly identified by her in an internal report dated March 13, 1911]; the gills were made of glass. AMNH Photographic Archives 33575. Bottom: A 1913 wax cast of American Amphiuma means, which lacks external gills. AMNH Photographic Archives 14879.