National Geographic : 1963 Aug
hoot, and ending with three or four roars. This is the cry of a male chimpanzee as he crosses a ridge. It seems to be an announcement to any other chimpanzees that may be in the valley below: "Here I come." These calls, while they are not a language in our sense of the word, are understood by other chimpanzees and certainly form a means of communication. In addition, chimpanzees communicate by touch or gesture. A mother touches her young one when she is about to move away, or taps on the trunk when she wants it to come down from a tree. When a chimpanzee is anxious for a share of some delicacy, he begs, holding 290 Sick call at camp finds the author's mother, "Open wide," comes the order and a chronic complainer swallows cough syrup. A fisherman's son of the Bantu Waha tribe, Jamanne dreams up a new ailment al most daily to get attention. Africans walk as far as 10 miles to obtain medicine. out his hand palm up, exactly as we do. He may pat the branch beside him if he wants a companion to join him there. When two ani mals are grooming each other and one feels that it is his turn to be groomed, he often reaches out and gives his companion a poke. Once, when three males were all grooming one another, I saw a female going round pok ing at each of them in turn. But shewas com pletely ignored-and so sat down sadly and groomed herself! There are also many gestures of greeting and friendship. Sometimes when two friends meet after a separation, they fling their arms around each other in a delighted embrace.