208 Animal Intelligence 
still not have a demonstration that the monkeys habitually 
did learn by getting percepts and images associated with 
sense-impressions, by having free ideas of the acts they per- 
formed; we should only have proved that they could under 
certain circumstances. 
The circumstances in these experiments on discrimination 
were such as to form a most favorable case. The act of 
going down had been performed in all sorts of different con- 
nections and was likely to gain representation in ideational 
life ; \the experience ‘bit of banana’ had again been attended 
to as a part of very many different associations and so would 
be likely to develop into a definite idea.| 
These results then do not settle the choice between three 
theories :_(z a) that they were due to a general capacity for 
having ideas, (1 6) that they were due to ideas acquired by 
specially favoring circumstances, (2) that they were due to 
the common form of association, the association of an im- 
pulse to an act with a sense-impression rather roughly felt, 
It would be of the utmost interest to duplicate these ex- 
periments with dogs, cats and other mammals and compare 
the records. |Moreover, since we shall find (z a) barred out 
by other experiments, it will be of great interest to test the 
monkeys with some other type of act than discrimination 
to see if, by giving the animal experience of the act and result 
involved in many different connections, we can get a rate 
of speed in the formation of a new association comparable to 
the rates in some of these cases. , 
Of course here, as in our previous section; the differences 
in the sense-powers of the monkeys from those of the kitten 
which I have tested with a similar experiment may have 
caused the difference in behavior... Focalized vision lends 
itself to delicate associations, _ Perhaps if one used the sense 
of smell, or if the dogs and cats could, preserving their same 
