5o8 



THE POPULAR SCIENCE MONTHLY 



Fig. 1. Exterior of the Laboratory Building op Comparative Pathology of the 



Zoological Society of Philadelphia. 



sent me some excellent photographs of pathological specimens prepared 

 at his laboratory and ohtained from animals which have died at the 

 Philadelphia Zoological Garden. These are very instructive, indeed; 

 but, much as I regret the fact, they can not well he used in the present 

 connection. 



It was in 1901 that pathological work upon the animals that died 

 at the Zoo was inaugurated, and this at the instance of Dr. Charles B. 

 Penrose, of Philadelphia, who had as advisers in the matter the late 

 Dr. Leonard Pearson, of the Pennsylvania Veterinary Department, and 

 Dr. M. P. Bavenel, of the State Stock Sanitary Board. 



The first pathologist to the garden was Dr. C. Y. White, assistant 

 director of the William Pepper Laboratory of Clinical Medicine, in 

 which laboratory the post mortems were done. 



We learn from the Thirty-first Annual Eeport of the Board of 

 Directors of the Zoological Society (1903) that no fewer that seventy- 

 six different species of mammals had there been examined with the view 

 of ascertaining the cause of their death, and the result of the autopsies 

 recorded (pp. 20-25). A large number of these mammals were various 

 species of monkeys, apes and their allies (Primates), and the great 

 majority of these succumbed to general tuberculosis. 



Besides this much-dreaded malady, these animals suffered from 

 twenty-five other diseases of which they were the victims; this does not 



