Moses was especially fond of corned beef and sardines, and would recognize a can of either as far away as he could see it. He also knew the instrument used in opening the cans. But he did not appear to appreciate the fact that when the contents had once been taken out it was useless to open the can again; so he often brought the empty cans that had been thrown into the bush, got the can-opener down, and wanted me to use it for him! I never saw him try to open a can himself otherwise than with his fingers. Sometimes, when about to prepare my own meals, I would open the case in which I kept stored a supply of canned meats and allow Moses to select a can for the purpose. He never failed to pull out one of the cans of beef bearing the blue label. If I put it back, he would again select the same kind, and he could not be deceived in his choice. It was not accidental, because he would hunt until he found the right sort. I don’t know what he thought when his choice was not served for dinner. I often exchanged it for another kind without consulting him. I kept my supply of water in a large jug, which was placed in the shade of the bushes near the cage. I also kept a small pan for Moses to drink out of. He would sometimes ask for water by using his own word for it. He would place his pan by the side of the jug and repeat the sound a few times. If he was not attended to, he proceeded to help himself. He could take the cork out of the jug quite as well as I could. He would then put his eye to the mouth of the vessel and look down into it to see if there was any water. Of course the shadow of his head would darken the interior of the jug so that he could not see anything. Then, removing his eye from the mouth of it, he would poke his hand into it. But I reproved him for this until I broke him of the habit. After a careful examination of the jug he would try to pour the water out. He knew how it ought to be done, but was not able to handle the vessel. He always placed the pan on the lower side of the jug; then he leaned the jug towards the pan and let go. He would rarely ever get the water into the pan, but always turned the jug with the neck down grade. As a hydraulic engineer he was not a great success, but he certainly knew the first principles of the science.