LABORATORY OF COMPARATIVE PATHOLOGY 511 



Fig. 4. Autopsy Room. 



on " Bird Diphtheria " follows, with others on " Eecurrent Ophthalmia," 

 and one made by Drs. E. A. Schumann and Fox on " Leucocyte Counts." 

 All these are in evidence of the marked activity of this very efficient 

 laboratory, and the character of the contributions we may expect from 

 it in the future. Autopsies are performed on all the animals which die 

 in the gardens, with the exception of the small reptiles. Dr. Fox says : 



The data concerning the animal during life is sent to the laboratory from 

 the office on a special card form and the pathological findings are put upon this 

 card. It is then used as a zoological index card and the diagnoses are cross in- 

 dexed in a pathological system. Routine and special pathological and bacterio- 

 logical methods are used as in the usual laboratory systems. The data obtained 

 from these diagnoses is used in the hygiene of the garden and for scientific 

 record. 



Included in the laboratory 's work is the testing of animals suspected of hav- 

 ing tuberculosis, a test made by subcutaneous injection of tuberculin. All 

 monkeys received by the garden are observed for several days, and a record made 

 of their daily 3 p.m. temperature. They are then tested, and if negative to this 

 test are passed to the general monkey collection. If the test be doubtful, they are 

 either held in quarantine or put on exhibition in isolated cages. If the test be 

 positive they are killed. In order to avoid the carrying of tubercle bacilli on the 

 hair they are washed in phenol solution upon arriving in and leaving the labora- 

 tory. Because of the frequent occurrence of proventricular worms in the parrots, 

 the laboratory also examines the excrement of all new arrivals before they are 

 put on exhibition. 



This laboratory consists of an equipment of a two-floored building. 

 We find on the first floor the general laboratory workroom (Fig. 2), 



