The Minds and Manners of Wild Animals: A Book of Personal Observations

In one corral I would mix up a chimpanzee, an orang-utan, a golden baboon and a good-tempered rhesus monkey. My apes would begin at two years old, because after seven or eight years of age all apes are difficult, or even impossible, as subjects for peaceful experimentation. I would try to teach a chimpanzee the difference between a noise and music, between heat and cold, between good food and bad food. Any trainer can teach an animal the difference between the blessings of peace and the horrors of war, or in other words, obedience and good temper versus cussedness and punishment. Dr. Yerkes' laboratory in Montecito, California, and his experiments there with an orang-utan and other primates, were in a good place, and made a good beginning. It is very much to be hoped that means will be provided by which his work can be prosecuted indefinitely, and under the most perfect conditions that money can provide. I hope that I will live long enough to see Dr. Yerkes develop the mind of a young grizzly bear in a four-acre lot, to the utmost limits of that keen and sagacious personality.