Cage in the jungle, The idea first conceived, 60 exceptional opportunities it afforded, 60, 71, 260 its construction, 62-64 its furniture, 64-66 date of occupancy, 71 length of occupancy, 71 my chimpanzee companion, 71 (see also _Moses_) the native boy, 71, 120, 121, 125, 148-149 program for the day, 73 ff. my menu, 73, 77, 79, 84 wild visitors, 75 ff., 186-190, 252-260 the tornado, 79 ff. _Cameroon_ (valley), 85, 213, 215, 267 Capuchin monkey, The (see also under _Monkey_), 18-19, 28, 29, 38, 39, 42, 52 Care of simian captives amusement of, 20-21, 33, 35, 54-56, 283 their short lives, 146, 200, 201 effects of confinement, 231 cannot live in pure air, 280, 281 condition compared to a certain tropical moss, 279-280 humidity essential, 280-282 diet, 282-283 dust of straw injurious, 283 tobacco fatal to the gorilla, 283-284 Catarrhini, 3 “Caucasian of monkeys, The,” 35 Cebus monkey, The (see also under _Monkey_) brown species, 17, 24, 42 experiments with, 17, 18 superior intelligence, 35 white-faced species, 42 _Charla_ (lake), 25 Charleston, S. C., Experiments at, 24 ff. Cherry, Mr. William S., African traveler, 212 Chicago Gardens, Experiments at, 17, 29 “Chico” his unusual size, 190 ” scream, 241 ” fear of an elephant, 268 _Chi Loango_ (river), 211, 218 Chimpanzee, The (see also _Kulu-kamba_, _Ntyigo_, and references under _Chimpanzee captives_) order of intelligence, 4, 60, 85, 99, 105-106 perception of number, 34 resemblance to man (see also _Skeleton_), 60-62, 92 in native haunts, 70, 71, 186-190 habitat, 85-87, 280 derivation and meaning of name, 86 two species, 86 ff. described in detail, 92-98, 188 position in sleep, 96 longevity, 98 age of maturity, 98, 191, 192 breeding season, 98-99 social traits and government, 99-105 reasoning power and mental status, 105, 116, 206 does not bear captivity well, 146 pulmonary trouble common, 146 maladies resemble man’s, 186 seen from the cage, 186-190 climate of America favorable, 200-201 mode of attack, 237 scream and beating sound, 240-242 disposition, 250, 284 Chimpanzees, Speech of extent of vocabulary, 108, 115, 136 number of words interpreted, 108, 115 pitch of voice, 108, 109, 111, 112, 116 vocal organs, 108-110 phonetic symbols invented by author, 109-113 method of producing sounds, 110-111 character and meaning of sounds, 112-115, 123, 125, 130, 135-137 quality of voice, 113 use of gestures, 114-115 possibility of development, 139 resemblance to human speech, 116 constant meanings of sounds, 136, 137