IO-8 



INDEX 



Arboreal life of gibbon, bearing of, on forclimb 

 and hand, 424, 425, 430 

 of gorilla, tcrrestrio-arboreal adaptation of, 669 

 of lemur, 12, 27, 50, 51 

 of Pithecus rhesus, 377 

 purpose of, 14 

 psychic influences from, 1 5 

 recession in, significance of, 18 

 relation of, to quadrunianal characters, 14, 669 



to vestibular complex, 66~, 669 

 significance of, 14, 15 

 Archaic constituents of brain, evolution in, 682, 714 

 Archipallium, 944 



Arciform nucleus in chimpanzee, 586, 617 

 in gibbon, 450 

 in gorilla, 672, 692 

 in man. 808, 81 1, 823, 83-, 843, 849 

 in orang, 515, 539 

 in Pithecus rhesus, 398 

 Area acustica, definition of, 799 

 in human brain, 799 

 in orang, 543 

 Area plumiformis, in gorilla, 656 



in human brain, 799 

 Area postrema in gorilla, 656 



in human brain, 799 

 Asiatic pygmy as prepaleolithic, ~~l 

 Ateles, spider monkey, tail of, 191, 203, 208, 210, 213 

 Auditory eminence in Neanderthal man, 903, 906 



relation of, to speech, 903 

 Auditor^- function, relation of, to speech, 883 

 Auditory mechanism, in tarsius, 120, 125 

 Auditory nerve in chimpanzee, 574. 384. 587, jQi 

 in dog-headed baboon, 316 

 in gibbon, 418, 419, 431, 432 

 in gorilla, 672 

 in Lemur mongoz, 50, 52 

 in man, 813, 814, 841, 842 

 in marmoset, 170, 171, 174 

 in mycetes, 220, 222 

 in orang, 513, 515, 516 

 in Pithecus rhesus, 373, 374. 3~6 

 Auditory sense in chimpanzee, 575> 600 

 as indexed by inferior colliculi, 602 

 less important than in lower primates. 600 

 in dog-headed bab<jon, 328, 46*) 

 evolutionary changes in, 2-6, 2-7, 2-8, 468 

 in gibbon, 439, 469 



primordial stations in, 439, 469 

 in gorilla, 679 

 relation of, to expansion in temporal region, 6-9 

 Pages I 474 are in Volume I, 



Auditory sense in gorilla, telencephalization of, 679 

 in lemur, 48, 49, 175, 278 



in man, relation of, to cerebral cortex, 2~, 278, 881 

 in marmoset, 164, 175, 178 

 in orang, 501 

 in Pithecus rhesus, 373, 379, 469 



reflex action in, 379, 383 

 relation of, to cerebral cortex, 333 



to inferior colliculi, 125, 164, 174, 178, 2-7, 328, 



383, 469, 470, 525 

 to lateral fdlet, 525 

 to reflex action, 278 



comparison in lower primates and man, 2-8 

 to superior olive, 516 

 to temporal lobe, 277, 383, 790 

 to trapezoid body, 516 

 to tuberculum acusticum, 48, 374 

 Aurignacean Period, art of, 762-765, 920, 931 



tools of. See Cro-Magnon, 759-766. 

 Australian aborigines, 742 

 natives, art of, 764, 765 

 Automatic associated control, in marmoset indi- 

 cated by basal ganglia in forebrain, 1-6, 177, 

 179.528 

 movements, modification of, 13 



probable relation of, to substantia nigra, 64, 

 68, 176, 177, 227, 332, 389, 528, 682 

 relation of, to globus pallidus, -i, i":^, 181 

 in tarsius, importance of, 113, ii~, I2~ 

 reflexes, in lemur, 278 



relation of, to auditor}' organization, 175, 278 

 to inferior colliculi, 227, 278 

 to olive, 168, 300 



to posterior longitudinal fasciculus, 4~ 

 Avian blood tests, 10 

 Azilian Period, "62, 931 



DABCX)N, dog-headed, 12, i", 287-289, 430,441 

 ^— "^ behavior, 289-294, 317 



brain of, 295-298 



callosities in, 289 



cochlear complex of, 343, 619 



color in, 289 



digits of, 290, 292, 293 



general appearance of, 289-291 



habitat of, 290, 292, 293. 294 



limbs of, 290 



locomotion of. 290, 294, 302 



lowest of old-world monkeys, 294 



measurements and indices of. 204. 2<h 



posture of, 294 

 pages 475-1120 in Volume II. 



