100 Report of the President 



COMPARATIVE ANATOMY* 



William K. Gregory, Curator 



As it is clearly recognized that effective exhibition work rests 

 upon comprehensive research, the Curator has 

 supervised or cooperated with the following 

 investigations : 



Dr. G. K. Noble's researches on the classification of the 

 Salientia, or anurous Amphibia, have resulted in the preparation 

 of an extensive article for the Bulletin, which is now in press. 

 This is an extremely important and fundamental work and will 

 have a very direct effect upon certain museum installations and 

 exhibits. 



In collaboration with the Curator, Dr. Noble also has in 

 progress a paper on the evolution of the alisphenoid bone of 

 vertebrates. Much material for illustrations is at hand, but so far 

 the services of an artist have not been available. Dr. Noble is 

 now continuing the research in reptiles and mammals upon the 

 embryological side. 



Mr. Charles L. Camp has brought his studies on the myology 

 and classification of the lizards to the point where he is able to 

 make a summary of the whole work, with excellent figures illus- 

 trating the evolution of the various parts of the anatomy of these 

 reptiles. He has completed over 50 plates, showing the muscles 

 of lizards of many genera and families. His summary is offered 

 for publication in the Bulletin, and will afford the basis for a 

 beautiful exhibit illustrating the evolution and adaptive radiation 

 of the lizards. His investigations are nearing completion, but 

 there is still much to be done in the lettering of the plates for 

 the memoir. 



Mr. A. S. Romer has completed his investigations on the loco- 

 motor apparatus of the Permian reptiles Diadectes, Diademodon 

 and Moschops. Over 200 drawings have been made in pencil 

 by him, and after having been inked in by Mrs. Beutenmuller and 

 Mrs. Ziska are now ready for publication, together with his 

 paper on this subject. Mr. Romer's work will contribute 



* Under the Department of Comparative Anatomy (see also page 214). 



