INDEX 



1103 



Olfactory sulcus in chimpanzee, "2 



in gibbon, 413 



in man, 791 

 Olfactory tract in chimpanzee, ,"2 



in gibbon, 413 



in goriihi, 649 



in man, 791, 947 



in mycetcs, 206 



in orang, 496 

 Oligocene Period, 981 



first bipedal locomotion in, gSi 



time of departure of llornini<lae IroTii common 

 stock, 733 

 Olivary complex, in Pithecus rhesus, 397 

 Olivary eminence in chimpanzee, 572, 612 



in gibbon, 417 



in gorilla, 662 



in man, 796, 843 



in orang, 498 



in Pithecus rhesus, 359 

 Olivary nucleus, inferior, in gibbon, 4-;(), 460 

 Olive in mycetcs, 208, 209, 219 



inferior coclTicients in intermediate primates, 460 



in tarsius, 99, 100 

 Olivo-cerebcllar pathway, (unction ot, 248 

 Ontogenesis, 262, 986 

 Opposable thumb, 981 



relation of, to psychic elements, illustrated by 

 howling monkey, 212 

 Optic chiasm in chimpanzee, $~o, 5-5, 605 



decussation in, in tarsius, 9" 



in dog-headed baboon, 297, 300, 301, 332, 534 



in gibbon, 415, 418, 444, 445 



in gorilla, 652, 659, 685 



in lemur, 36, 38, 69, 70 



in man, 791, 834, 836, 947 



relation to, of optic nerves and tract, 947 



in marmoset, 162 



in mycetes, 205, 208, 229 



in orang, 5O0, 530, 531 



in Pithecus rhesus, 359, 362, 364 



in tarsius, 9~, 112, 131, 132 

 Optic decussation in mycetes, 229 



in Pithecus rhesus, 387 

 Optic lobes in dog-headed baboon, 329 

 strata in, 329 



in lemur, superseded by cerebral cortex, 65, 6- 



progressive changes in, 276, 2'"7, 329, 385 



in tarsius, loi 

 Optic nerve in chimpanzee, 5~o, 605 



in dog-headed baboon, 300 



Pages 1-474 are in Volume I, 



Optic nerve in gibbon, 418 



in gorilla, 650 



in man, 835 



in marmoset, 162 



in mycetes, 208 



in orang, 531 



in Pithecus rhesus, 362 



in tarsius, 100 

 Optic thalamus, in chimpanzee, 605, 607 

 function of, 354, f>o6 



in dog-headed baboon, 334 



in gibbon, 445, 446 



in gorilla, 682, 683, 684 



in lemur, 70, 71 



in man, 835, 836 



in marmoset, importance of, 180, 181, 182 



in orang, 530, 531 



in Pithecus rhesus, 389 

 Optic tract in chimpanzee, 570, 575, 605 



in dog-headed baboon, 332, 334 



in gorilla, 650, 657 



in lemur, 69 



in man, 835 



in marmoset, 180 



in orang, joo, 531 



in Pithecus rhesus, 364 



in tarsius, 131 

 Optico-peduncular space in chimpanzee, 575, 601, 

 603, 604 



in dog-headed baboon, 300 



in gibbon, 421, 441, 443 



in Gibraltar skull, 907 



in gorilla, 657, 681 



in lemur, 36, 38 



in man, 791, 833 



in marmoset, 162 



in mycetes, 208 



in orang, 500, 528 



in Pithecus rhesus, 388 



in tarsius, 99, too 

 Orang-outang, 12, i", 22, 478-544 



arboreal life of, 17, 483, 484 



behavior of, 480, 483, 491 



general appearance of, 479, 480 



habitat of, 4-9, 483 



measurement and indices of brain of, 492 

 Orbital concavities, in ape-man of Java, 875 



in chimpanzee, 570 



in dog-headed baboon, 296, 297 



in gibbon, 413, 415 



in Gibraltar skull, 906 

 pages 475 1120 in Volume II. 



