114 



NEW YORK ZOOLOGICAL SOCIETY. 



A 



^-..^, 





BALANTIDIUM COLI IN AN ORANG-UTAN. 



A micro-photograph, magnification, 94.5 diameters: section through ulcer of colon, showing the 

 imdermined character o) the ulcerations, and the presence of numerous Balantidia colt in the siib- 

 mucosa. A, mtestinal gland : B, inflamed follicle ; C C C", Balanttdia coli. 



had died from exhaustion and mahiutrition consequent upon the 

 ulcerative cohtis. 



In the colon of " Sultan,"' who recovered from the first epi- 

 demic but died from a subsequent attack, only a few recent ul- 

 cerations were found, but the mucosa of the colon was almost 

 obliterated from the contraction of the scars resulting from the 

 former attack. In the recent ulcerations, and in the dilated 

 crypts, the Balantidium coli was found, as in the other cases. 



The colon of the chimpanzee showed a marked general 

 atrophy of the mucosa resulting from healing of previous ulcer- 



