I also made him another hammock, which was hung a few yards from the cage. It was intended that he should get into this without bothering me. But he did not seem to care for it, until I brought a young gorilla to live with us in our jungle home. As Moses had never used this hammock, I assigned it to the new member of the household. Whenever the gorilla got into the hammock there was a small row about it. Moses would never allow him to occupy it in peace. He seemed to know that it was his own by right, and the gorilla was regarded as an intruder. He would push and shove the gorilla, grunt and whine and quarrel until he got him out of it. But after doing so he would leave the hammock and climb up into the bushes, or go scouting about, hunting something to eat. He only wanted to dispossess the intruder, for whom he nursed an inordinate jealousy. He never went about the gorilla’s little house, which was near another side of my cage. Even after the gorilla died Moses kept aloof from its house. As a rule, I took Moses with me in my rambles into the forest, and I found him to be quite useful in one way. His eyes were like the lens of a camera; nothing escaped them. When he discovered anything in the jungle, he always made it known by a peculiar sound. He could not point it out with his finger, but by watching his eyes the object could often be located. Frequently during these tours the ape rode on my shoulders. At other times the boy carried him; but occasionally he was put down on the ground to walk. If we traveled at a very slow pace, and allowed him to stroll along at leisure, he was content to do so; but if hurried beyond a certain gait, he always made a display of temper. He would turn on the boy and attack him if possible; but if the boy escaped, the angry little ape would throw himself down on the ground, scream, kick, and beat the earth with his own head and hands, in the most violent and persistent manner. He sometimes did the same way when not allowed to have what he wanted. His conduct was exactly like that of a spoiled or ugly child. He had a certain amount of ingenuity, and often evinced a degree of reason which was rather unexpected. It was not a rare thing for him to solve some problem that involved a study of cause and effect, but this was always in a limited degree. I would not be understood to mean that he could work out any abstract problem, such as belongs to the realm of mathematics, but only simple, concrete problems, the object of which was present.