The performance was fairly bewildering; but by diligent work I recorded the whole of it. Various horses did various things. They fetched chairs, papers, hats and coats; opened desks, rang bells, came when called, bowed, knelt, and erased figures from a blackboard. They danced a waltz, a clog dance, a figure-8; they marched, halted, paced, trotted, galloped, backed, jumped, leaped over each other, performed with a barrel, a see-saw and a double see-saw. Their marching and drilling would have been creditable to a platoon of rookies. In performing, every horse is handicapped by his lack of hands and plant grade feet; and the horse memory is not very sure or certain. More than any other animal, the horse depends upon the trainer's command, and in poor performances the command often requires to be repeated, two or three times, or more. The memory of the horse is not nearly so quick nor so certain as that of the chimpanzee or elephant. Dr. Martin J. Potter, of New York, famous trainer of stage and movie animals, states that of all animals, wild or domestic, the horse is the most intelligent; but I doubt whether he ever trained any chimpanzees. Speaking from out of the abundance of his training experience with many species of animals except the great apes, Dr. Potter says that "the seal [i. e. California sea-lion] learns its stage cues more easily than any other mute performer. The horse, however, is the most intelligent of all animals in its grasp and understanding of the work it has learned to perform, and in its reliable faithfulness and memory." Dr. Potter holds that of wild animals the tiger, owing to its treachery and ferocity, is the most difficult wild animal to train; the lion is the most reliable, and the most stupid of all animals is the pig. The Taming of Boma. A keeper for a short time in our place, named D'Osta, once did a very neat piece of work in taming a savage and intractable chimpanzee. When Boma came to us, fresh from the French Congo, he was savage and afraid. He retreated to the highest resting-place of his cage, came down only at night for his meals, and would make no compromise. We believed that he had been fearfully abused by his former owners, and through mistreatment had acquired both fear and hatred of all men. After the lapse of several months with Boma on that basis, the situation grew tiresome and intolerable. So D'Osta said: "I must tame that animal, and teach him not to be afraid of us."