TWENTY-THIRD ANNUAL REPORT 67 



mer and autumn months. These exhibitions were remarkable 

 demonstrations of the mental capabilities of the anthropoids. 

 Susette dined from a table, smoked cigarettes, did "trick" rid- 

 ing on a bicycle, walked a tight-rope, ascended a sharp incline 

 on a big ball and concluded with a surprising exhibition of roller 

 skating. These performances were enjoyed by thousands of 

 visitors and they particularly entertained the children, for whom 

 an elevated platform is provided. 



As in former years, the Society loaned a series of small mam- 

 mals, birds and reptiles for study purposes to the Washington 

 Irving High School. These animals are returned to the Park 

 during the vacation period and sent back in September. This 

 school has a very attractive vivarium for the exhibition of living 

 specimens, and each year it is visited by thousands of children 

 from schools in different parts of the city. 



A census of the collections of mammals compiled on Decem- 

 ber 31, 1918, is as follows: 



Species. Specimens. 



Marsupialia 14 35 



Edentata 1 1 



Carnivora 38 89 



Pinnipedia 1 2 



Rodentia 25 137 



Primates 27 56 



Artiodactyla (Even-toed Ungulates) 47 224 



Perissodactyla (Odd-toed Ungulates) 11 19 



Proboscidea 2 3 



Monotremata 1 1 



167 567 



DEPARTMENT OF BIRDS. 



Lee S. Crandall, Curator; William Beebe, Honorary Curator; 

 Samuel Staoey, Head Keeper. 



The close of the great war finds the collections of the Bird 

 Department somewhat reduced in numbers but still rich in rare 

 and unusual forms. Increased vigilance and intensive care on 

 the part of our keepers has enabled us to retain many species 

 which might easily have succumbed to the adverse conditions 

 through which most of them have successfully passed. We thus 



