36 Report of the President 



Mr. Chubb has continued his work upon modern osteology, 

 especially of the horse, and has several important preparations 

 completed or in progress. 



The most important publication of the year from this 

 department is Professor Osborn's " Age of Mammals," pub- 

 lished by the Macmillan Company, in which for the first time 

 the results of the great activity of recent years in collecting 

 and research upon fossil mammals have been brought together 

 in popular form. This work has been accomplished through 

 the aid of the Research and Publication Fund. No adequate 

 text-book on this subject hitherto has existed, and the need 

 for one has been frequently urged. "The Orders of 

 Mammals," by Dr. Gregory, an able and philosophic study of 

 the relationships of the various large groups of mammals, 

 living and extinct, issued as Vol. XXVII of the Bulletin, 

 also has been very favorably received. Studies of the Tyranno- 

 saurus skull and the Trachodon mummy by Professor Osborn, 

 upon the Toothed Birds by Mr. Brown, upon Permian Verte- 

 brates by Dr. Case and Dr. Broom, upon Sabretooth Tigers 

 and Primitive Rodents by Dr. Matthew, have been completed, 

 and other important research work is in progress. 



In consequence of the heavy demands upon Professor 

 Osborn's time as President, Dr. Matthew has been appointed 

 active Curator, Professor Osborn taking the title of Curator 

 Emeritus and continuing to direct, as formerly, the general 

 policy of the department, while relieved of its executive 

 detail. Mr. Barnum Brown has been appointed Associate 

 Curator of Fossil Reptiles, and Mr. Walter Granger, Associate 

 Curator of Fossil Mammals; these appointments are a well 

 merited recognition of their successful exploration work and 

 efficient and loyal cooperation in the various activities of the 

 department. The department is also fortunate in the addition 

 of Dr. W. K. Gregory to its regular staff. 



LIVING REPTILES, BATRACHIANS, LIVING AND 

 EXTINCT FISHES 

 Bashford Dean, Curator; Louis Hussakof, Associate Curator 

 Department of Ichthyology and Herpetology. — Pro- 

 fessor Bashford Dean served as Curator until April and then 



