LABORATORY OF COMPARATIVE PATHOLOGY 509 



Fig. 2. General Laboratory Work room. 



include the parasites observed, nor one bird — a cow bird — in which 

 case molluscum contagiosum proved fatal. These examinations were 

 made during the period from November, 1901, to March 1, 1903. Nu- 

 merous other animals also died during this time of which no record was 

 kept and no examination made; these were principally birds and indigen- 

 ous species of mammals, reptiles and other forms. They died chiefly 

 from the injuries and disturbances incident to their capture and captiv- 

 ity, most often shortly after reception, and, as a general thing, no 

 special use was ever made of them. 

 Dr. Penrose reported that 



In ten of the animals examined no cause of death was discovered, though 

 careful investigation of all the organs was made, as well as bacteriological exam- 

 ination of the blood. Change in food, water, temperature and general environ- 

 ment, may cause the death of wild animals in captivity, without producing gross 

 or apparent lesions of any of the structures of the body. It is probable that in 

 some cases the animal dies of a toxa?mia due to improper food, though we have 

 been unable to determine the existence of this condition at autopsy. The post 

 mortem changes have usually rendered the bacteriological examination very un- 

 satisfactory. 



These reports of Drs. Penrose and White, continuing until 1906, 

 are of great interest and importance, but altogether too extensive even 

 for summarization here. 



In 1905 a building was selected upon the grounds of the garden 

 and, at some expense, remodeled for a pathological laboratory, Dr. 



