Etymology of native names, 232, 272 Evolution, 36 Expression (see also _Facial expression_) defined, 13 speech a means of, 13 animals’ limit of, 13, 23 Facial expression of simians, 1, 16, 46, 47, 126, 146-147, 150, 162, 170, 182, 197, 202-204, 206, 207, 229 Falkenstein, Dr., 267 Ferocity of apes exaggerated, 229, 235-236 _Ferran Vaz_ (lake), 66, 144, 149, 219, 228, 270 _Fiote_ (tribe and language), 86, 267 Five young kulus, 207-210 Food of chimpanzee, 106-107, 128-129, 132 of gorilla, 245-246 Ford, Dr., African traveler, 214, 217 Form, Simians’ perception of, 30, 139, 196 Fort Gorilla, 71 _Gaboon_ (town and river), 66, 153, 155, 182, 211, 214-217, 268, 272 Gaboon, Some captives at, 182 ff. their table manners, 182-184 their love of beer, 183-184 their dexterity, 184 maladies resemble man’s, 186 Gibbon, The order of intelligence, 4 arboreal habit, 96, 276 size and activity, 275-276 skeleton, 276 can stand erect, 276 wonderful leaping power, 276 several known species, 277 vocal qualities, 277 Glave, E. J., African traveler, 241 Goode, Rev. A. C., late missionary at Batanga, 272 Gorilla, The order of intelligence, 4, 211, 232 resemblance to man, 60 in native haunts, 70, 71 seen from the cage, 71, 77-78, 186, 252-260 his scream and beating sound, 84, 109, 237-242 arboreal habit, 96-97, 224-225, 245 nomadic, 97, 233 habitat, 211 ff., 273, 278-279 early reports of (see references under _Early reports_) skeleton, 218-223 described in detail, 223 ff. cannot walk erect, 225 the “calf” as means of comparison, 227 species, 228, 274 compared with other apes and with man, 228-231 social traits and government, 231 ff. derivation of name, 232 in council, 234 ferocity exaggerated, 235-236, 262, 273 mode of attack, 236-237 sounds wrongly attributed to, 109, 240-242 method of carrying young, 242, 259 disposition, 242, 250-251, 284 food, 245-246, 282-283 stealthiness, 253, 262 calling sound, 254 difficult to find, 260-263 only one ever brought to America, 263 a wild gorilla takes his own photograph, 264-265 care in captivity, 278 ff. Great forest, The, 68 Guinea, Gulf of, 85, 266 Habitat of gorilla, 211 ff., 273, 278-279 of chimpanzee, 85-87, 280 of orang, 274 of gibbon, 276 Handmann, Mr. Otto, German consul at Gaboon, 182 Hanno, 500 B.C., earliest mention of the ape, 266-267 Harris, Captain, African traveler, 217 Harvard Medical School Collection, 6 Hornaday, W. T., authority on orang, 275 Human faculties, embryo of all, exists in simians, 37 _Ikomba njina_, 232, 234, 235 _Inenga_ (lake), 218 Ingenuity of simians (see _Dexterity_) _Izanga_ (lake), 184, 212, 223 an unhappy captive at, 184-185 an act of mercy, 185 “Jack,” 25 “Jennie,” 27