i()86 



INDEX 



Cuneus, 797, 798. See also Coluniii and Nuckus ol 

 Burdach. 



in chimpanzee, 569, 5-2, 573 



definition of, 6^ 



in dog-headed baboon, 301, 302 



in lemur, significance of, 38, 39 



in gibbon, 4.18, 419 



in goriMa, 655, 656, 662 



in marmoset, 163 



in mycetes, 209 



in orang, 498. 499 



in Pithecus rhesus, 3f)(i, }6i, 362. 363 



relation of, to Idreliml), 38, 39, 302 



in tarsius, 99, 101 

 Cunningham, Alyse, on gorilla, 632-642 

 Cynocephalous monkeys, 287 

 Cynoeephalus babuin. See Baboon. 



D 



ANIIiL, JOHN. .SVe.h.hn Daniel. 



Daubentonidae, family of I cniuroidea, 21 



Dawn man, 742, 884-893. See also Eoanthropus 



Dawsoni, 742 

 Dawson, Charles, 884 



Decussation in allereiU course of all sensory path- 

 ways, :;92 

 in impulses from i)r()pnocepU\'e struct urt- ol 



internal ear, 592 

 of oculomotor nuclei in chimpanzee, 602, 604 

 as index of vision, 602 

 in dog-headed baboon, 472, 724 

 function of, 1035 

 in gibbon, 441, 724 

 in gorilla, 681 



prominence of, 678 

 in higher anthropoids, coefficients of, 724 

 as important index of progressive adaptations 

 in skilled acts, 471, 472, 527 

 and vision, 832 

 in intermediate primates, coellicients of, 472 

 in man, 831 

 in mycetes, 228 

 in orang, 724 



extension of, 528 

 in Pithecus rhesus, 387, 388, 724 

 relation of, to binocular vision, 723, 725 

 to ditferentiation in hand, 1036 

 to neokinesis, 1035 



to visiim in higher anthropoids, 471-473, 52- 

 in optic pathway in marmoset, 180 

 pyramidal. See Pyramidal decussation. 



Pages 1-474 are in Volume I, 



Decussation of superior cerebellar peduncle, 32-, 



343 

 in chimpanzee, 600, 616, 724 

 in dog-headed baboon, 32^, 345 

 in gorilla, 679 

 in man, 848, 856 

 in marmoset, 175, 176 

 in Pithecus rhesus, 384, 385, 402 

 in Tarsius spectrum, 1 2 1 - 1 27 

 of trochlear nerve in gibbon, 420 

 Dcllorescence as signal of evolutionary advance in 



inferior and superior colliculi, 1033 

 Degeneration, sociogenetic explanation of, relation 



of, to luxury, 775 

 Deiters' nucleus, in chimpanzee, 584-592, 618, 6ig, 



"12 



in dog-headed baboon, 316-318, 336, 33-, 339, 343 



first appearance of, in vestibular nuclei, 80 



function of, 170 



in gibbon, 431, 432, 452 



relation of, to bal.incing mechanism, 432 



in gorilla, 667, 693 



in higher primates, coefficients of, 713 



in intermediate primates, coefficients of, 464 



in Lemur mongoz, 50-53, 77-83 



in lower primates, comparison of, 262 

 coefficients of, 262, 263 



in man, 813, 814, 822, 852 



in marmoset, 170, 171, 186-189 



in mycetes, 217-221, 236-242 



in orang, 512, 513, 540 



in Pithecus rhesus, 373. 374, 375, 376, 392, 395, 

 397, 400, 403 



in tarsius, 114-117, 145-149 

 Deitersal area in Tarsius spectrum, 1 16, 1 18 

 Deitersal tract in mycetes, 221 



in Tarsius spectrum, 118, 119 

 Deitcrso-spinal tract in chimpanzee, 594 



in dog-headed baboon, 306-316 ( 



function of, 47, 48, 50 



in gibbon, 422-429 



in lemur, 42, 45, 46, 47 



in man, 804, 806, 808 



in marmoset, 165, 166, 167, i6<), 170 



in mycetes, 2!i, 215, 218, 220 



in orang, 503, 507 



in Pithecus rhesus, 36f)— 375 



in tarsius, 102, 104, 105, 106-108, 1 14-117 

 Dentate nucleus. See Nucleus dcntatus. 

 Dermatomic areas, 370, 595, 660 

 pages 475-1120 in Volume II. 



