244 IN BRIGHTEST AFRICA 
gorilla’s palate and muscles are like man’s that he 
will be able to talk or pass out of the barking or roar- 
ing phase. The gorilla has what might be called 
‘roaring pouches”’ that extend down the side of his 
neck. It is an interesting fact that there is evidence 
of these same pouches in man, although they are 
nearly atrophied from long disuse. It seems, there- 
fore, that even if the gorilla does not learn man’s 
speech, man at one time used the gorilla’s roar or one 
of his own. 
Man differs from most animals in the amount of 
variation in the different members of the species. 
The skull measurements of half-a-dozen lions, for 
example, will be much more nearly uniform than the 
skulls of half-a-dozen men. In this particular the 
gorilla is like man. Their skulls show great varia« 
tion. The gorilla skulls I brought back will exem- 
plify this. The death masks of these gorillas show 
another interesting thing which I never noticed un- 
til I put the masks of the animals shot on Mt. Mikeno 
in one group andthose shot on Mt. Karisimbi in 
another. The male and female of Mikeno resemble 
each other more nearly than either of them do any 
of the Karisimbi gorillas. Likewise the three Kari- 
simbi gorillas have features more alike than any of 
them are like either of the Mikeno faces. Whether 
these are family resemblances or whether they arise 
from geography, which seems doubtful, as the moun- 
tains merge in a saddle at between 10,000 and 11,000 
feet, or whether it is accidental I do not know. But 
the fact suggests a line of study, 
