At the Zoological Park we reared an African pygmy elephant (_Elephas pumilio_). When his slender little tusks grew to eighteen inches in length he made some interesting uses of them. Once when the keepers wished to lead him upon our large platform scales, the trembling of the platform frightened him. He conceived the idea that it was unsafe, and therefore that he must keep off. He backed away, halted, and refused to leave solid ground. The men pushed him. He backed, and trumpeted a shrill protest. The men pushed harder, and forced him forward. Trumpeting his wild alarm and his protest against what he regarded as murder, he fell upon his knees and drove his tusks into the earth, quite up to his mouth, to anchor himself firmly to the solid ground. It was pathetic, but also amusing. When Congo finally was pushed upon the scales and weighed, he left the trembling instrument of torture with an air of disgust and disapproval that was quite as eloquent as words. On several occasions when taken out for exercise in the park, he endeavored to hinder the return to quarters by anchoring himself to Mother Earth. Congo once startled us by his knowledge of the usefulness of doors. For a time he was kept in a compartment that had an outside door running sidewise on a trolley track, and controlled by two hanging chains, one to close it and one to open it. Each chain had on its end a stout iron ring for a handle. One chilly morning when I went to see Congo, I asked his keeper to open his door, so that he could go out. The keeper did so, by pulling the right hand chain. The moment the draft of chilly outer air struck Congo, who stood in the centre of his stall facing me, he impatiently wheeled about, walked up to the left hand chain, grabbed it with his trunk, slipped the ring over one of his tusks, then inclined his head downward and with an irritated tug pulled the door shut with a spiteful slam. "Open it again," I said to the keeper. He did so, and in the same way, but with a visible increase in irritation, Congo closed it in the same manner as before. Again the keeper opened the door, and this time, with a real exhibition of temper Congo again thrust the ring over his tusk, and brought the door shut with a resounding bang. It was his regular habit to close that door, or to open it, when he felt like more air or less air; and who is there who will say that the act was due to "instinct" in a jungle-bred animal, or anything else than original thought. The ring on his tusk was his own invention, as a means to a desired end.