The Mental Life of the Motonkeys 239 
as far as seems to them likely: To me it seems+ork jn parts, 
that the very general mental traits which the Te*hroughout, 
demonstrated hold true with little variation in the mq if one 
in general. ‘ator 
The monkeys represent progress in mental developmen: at 
from the generalized mammalian type toward man : — 
1. In their sensory equipment, in the presence of focalized 
vision. 
_2. In their motor equipment, in the coérdinated move-, 
ments of the hand and the eye. 
3. In their instincts or-inherited nervous connections, in 
their general physical and mental activity. 
| 4. In their method of learning or associative processes ; 
in — 
Quicker formation of associations, 
Greater number of associations, 
Greater delicacy of associations, 
Greater complexity of associations, 
e. Greater permanence of associations. 
The fact of (1) is well known to comparative anatomists. 
Its importance in mental development is perhaps not real- 
ized, but appears constantly to a systematic student. 
(2) is what accounts for much of the specious appearance 
of human ways of thinking in the monkeys and becomes in 
its human extension the handy tool for much of our intel- 
lectual life. It is in great measure the prerequisite of 4c. 
\_(3) accounts for the rest of such specious appearances, is 
at the basis of much of 4 6, presages the similar though 
extended instincts of the human being, which I believe are 
the leading efficient causes of human mental capacity, and 
is thus the great mental bond which would justify the in- 
clusion of monkeys and man in a common group if we were 
to classify animals on the basis of mental characteristics. 
So eS 
