44 Animal Life 
of enormous size exist in the forest on the watershed between the northern affluents 
of the Congo and the sources of the rivers flowing towards the Cameroons coast. 
The gorilla has been credibly reported to exist in the forest country between the 
ereat Mubangi-Welle River and the northern bend of the Congo. Lastly, I have 
myself seen photographs of gorillas taken by Belgian officers who had killed them 
near the Stanley Falls, on the Upper Congo, and in the Ituri Forests (at Avakubi, 
for instance), not more than from two or three days’ to a week’s march from the 
Semliki River and the Uganda frontier. Besides these photographs (one of which, I 
believe, was published in a book by Captain Guy Burrows), skulls of these gorillas 
were sent from the districts in question to Brussels, and are now in the Congo State 
Museum at that place. 
The hair of the gorilla turns grey apparently much more than is the case with 
the chimpanzee. All old gorillas of both sexes (but especially in the male) seem 
eradually to become iron-grey and then almost whitish-grey—at any rate from the 
scalp of the head downwards over the back—when they are in advanced middle age 
(which we might guess to be equivalent to 30 years). Our information as to the length 
of life on the part of the great anthropoids is very scanty. In captivity, no anthropoid 
ape has been known, I believe, to reach to more than fifteen years beyond the age at 
From a Photograph. 
YOUNG CHIMPANZEE. 
This and the following photographs were specially taken to illustrate this article by Mr. W. P. Dando, F.Z.8., 
under the supervision of the author. 
