Monkeys, Speech of study of, 14 ff. poor success of first efforts, 15 sound meaning “alarm” or “warning,” 14, 20, 24, 27 phonograph first used, 16-18 sounds have constant meanings, 15, 18, 23 number of sounds interpreted, 18 sounds described, 19-20 speech monophrastic and monophonetic, 19, 44 pitch of voice, 20, 28, 50 resemblance to human speech, 20, 22-23 each species has its own speech, 23, 44 sign of surrender, 25 ff. sound meaning “food,” 19, 28, 29 sound meaning “drink,” 19, 28, 29 musical quality of voices, 19, 25, 45, 47, 50, 53, 57 eloquence, 22, 47-50 types of speech and inflections, 23, 42, 60 “Moses” my sole companion in the cage, 71 his breakfast, 73 his amusements, 73, 120, 122-124 his siesta, 77, 124 position in sleep, 96 learns a word of human speech, 115-116, 137-138 his capture, 117-118 his moral training, 118, 120-121, 130-132 his tricks, 120-121, 123-124, 131 dexterity and ingenuity, 122, 126, 129-130, 132-133 reading the newspaper, 123 his jealousy and temper, 125, 186 our walks in the jungle, 125 understood rights of possession, 125, 128 preferences in food, 128, 129, 132 meaning of sounds, 123, 125, 135-137 his quick vision, 125 a severe lesson, 131-132 reasoning power, 133 his devotion, 134-135 perception of form, color, music, etc., 139 he signs a legal document, 139-140 last illness, 140-142, 149-151 his chimpanzee nurse, 149-152 his death, 142, 151, 152 his claims to fame, 143 _Mpongwe_, 86 Music, Simians’ perception of, 35-36 Native explanation of relationships, 269-270 Native reports unreliable, 215, 231 _Nazavine_ (bay), 270 “Nellie” her love of companionship, 20, 22 warns me of danger, 21 ff. her perception of sound, 22 with Helen Keller, 52-53 her ingenuity, 56-57 “Nemo” his diplomacy, 47 his abject apology, 47-48 _Nenge Nenge_ (town), 214 New world monkeys, 3 their superior intelligence, 35 New York Zoölogical Gardens, Experiments at, 45-51 _Nguni_ (river), 154, 211, 213, 218 “Nigger,” 45, 51 _Njina_, 228, 267, 269, 270 _Njole_ (town), 213 _Nkami_ (tribe, lake, and river), 66, 144, 212, 218, 272 _Noogo_ (river), 144 Nose a distinguishing feature, The, 3 _Ntcheego_, 268 _Ntyigo_ (see also under _Chimpanzee_) its habitat, 87 described, 87-90 compared with _kulu-kamba_, 90-91 distinguished from _ntyii_, 228 _Ntyii_, 223, 228, 267, 269-270 _Ntyi-ne-nye-ni_ (village), 144 Number, Perception of by simians, 32-34, 36 by birds, 34 _Ogowé_ (river, delta, and basin), 66, 117, 202, 211, 213, 214, 215, 217, 218, 223, 272 Old world monkeys, 3 Orang, The order of intelligence, 4 arboreal habit, 97 a captive at Bellevue, 200 compared, 274, 275 _Orungu_ (tribe), 215