s was the only object in the cage which could possibly be of
use in obtaining the banana. The aim of the experimenter was to discover
whether Julius would use this as a club.

Previously, in connection with the use of the boxes, he had taken up the
same stick two or three times and reached for the banana with it, but in
no case had he struck at it or clearly tried to knock it from the
string, as did the child most readily and naturally. When provided with
this same stick, and it alone, as a means of obtaining the food, he hit
upon the following interesting method. Placing one end of the stick
between a wooden brace and the wire side of the cage, he climbed up to a
level with the banana as is shown in figure 33 of plate VI. Then holding
with one hand and one foot to a timber of the cage and to the stick with
his other foot, he swung outward as far as possible and reached the
banana with his free hand. Having once succeeded by the method, he used
it whenever given an opportunity. It was impossible for him to make the
reach without the use of the small stick, while with it he succeeded
fairly easily and regularly.

_Box and Pole Experiment_

Following the box stacking test, Julius was given an opportunity to
exhibit ideation in another type of experiment. This may be designated
the box and pole test. The conditions are describable thus. A strong
wooden box eighty-four inches long, by four inches wide, by four inches
deep, with open ends, was built with one side hinged. Hasps and padlocks
enabled the experimenter to lock this "lid" after food had been placed
in the center of the box. This box could be placed in the center of the
large cage and there fastened by means of cross bars. It is well shown
in position in figure 29, plate V. Two poles each eight feet long and
approximately one and a half inches in their other dimensions were the
only additional materials in the experiment.

On May 1, Julius was allowed to see the experimenter place a half banana
in this box, close the lid, lock it in position, and securely fasten the
box by means of the cross bars. He was then given opportunity to try to
get the banana. The two poles lay on opposite sides of the box and near
the edges of the cage. Doctor Hamilton and the writer were in the cage
watching. Julius looked into the box through one end, and seeing the
banana, reached for it. He could not obtain it in this way, so he began
to bite at the box and to pull at it with all