PROCEEDINGS OF THE CANADIAN INSTITUTE. 121 



The abdominal viscera were examined and one noted the existence of a long, 

 well developed vermiform appendix. This structure is present in the Orang and 

 the Chimpanzee among Anthropoid Apes, but is generally absent in Monkeys and 

 in the majority of Mammals. One noted also the entire absence of those redupli- 

 cations of the mucous memibrane of the small intestine which are described in 

 man as the " Valvulae Conniventes." 



The author of this paper proposes to make a complete dissection of the Orang, 

 and hopes to make a further communication to the Institute when the work is 

 complete. 



