CHAPTEE XVII. 
MONKEYS, APES, AND BABOONS. 
We now come to the last group of animals which we shall 
have occasion to consider, and these, from an evolutionary 
point of view, are the most interesting. Unfortunately, 
however, the intelligence of apes, monkeys, and baboons 
has not presented material for nearly so many observations 
as that of other intelligent mammals. Useless for all 
purposes of labour or art, mischievous as domestic pets, 
and in all cases troublesome to keep, these animals have 
never enjoyed the improving influences of hereditary 
domestication, while for the same reasons observation of 
the intelligence of captured individuals has been com- 
paratively scant. Still more unfortunately, these remarks 
apply most of all to the most man-like of the group, 
and the nearest existing prototypes of the human 
race : our knowledge of the psychology of the anthropoid 
apes is less than our knowledge of the psychology of any 
other animal. But notwithstanding the scarcity of the 
material which I have to present, I think there is enough 
to show that the mental life of the Simiadce is of a dis- 
tinctly different type from any that we have hitherto con- 
sidered, and that in their psychology, as in their anatomy, 
these animals approach most nearly to Homo sapiens. 
Emotions . 
Affection and sympathy are strongly marked — the 
latter indeed more so than in any other animal, not even 
excepting the dog. A few instances from many that 
mighf : be quoted will be sufficient to show this. 
