lirontosaurus, 106-7 



Broom, R., 16-17, 21-22, 28, 154 



Bushmen, 139, 147 



Campbell, B. G., 91, 154 



Capacity, endocranial: as a measure of 

 brain size, 3 ff., 95; determination 

 of, 7, 8; proportion occupied by 

 brain, 9-11; of Australopithecus, 

 11 ff., 139; of Taung child, 12-15; 

 age changes in, 14-15, 26, 58, 68-71, 

 75, 79-80; of chimpanzee, 14-15, 

 26, 30-31, 33, 36-37, 42; of gorilla, 

 15, 28-31, 43; of orangutan, 15, 30- 

 31, 43; of Sterkfontein crania, 16- 

 17; of Makapansgat cranium, 17- 

 19; of A. africanus, 19-21, 27 ff., 48- 

 49, 59-60, 67; of A. robustus, 21-24; 

 of Swartkrans crania, 21-24; of 

 Kromdraai cranium, 22; of A. boisei, 

 24-26; of Olduvai crania, 24-26; of 

 gibbon, 32-35, 42, 50-53; of sia- 

 mang, 32-35, 42, 53; sex ratio of, 33, 

 37, 40, 45; sexual dimorphism of, 

 33' 37- 45 ff -. 5 8 -59; intraspecific 

 diversification of, 37, 58, 95; distri- 

 bution of, 41, 49 ff., 57 ff-; extreme 

 range of, 41 ff., 94-95; variability 

 of, 41 ff., 48-49, 52-55, 59, 94-95; of 

 Homo sapiens, 43; polymorphy and, 

 49; polytypy and, 49; skewness of, 

 49 ff., 57 ff.; of Homo habilis, 60 ff., 

 96; of Homo erectus, 81 ff., 96, 139; 

 change with time, 99-103, 113 



Capuchin, 1 17 



Carmichael, E. A., 10, 156 



Carnivore activities, 128 



Chimpanzee, see under Capacity, en- 

 docranial; Pan 



Choukoutien, 65, 68, 90-91, 138 



Cistern, 8 



Clark, W. E. Le Gros, vii, 15-16, 21- 

 22, 118, 127, 143, 154-55 



Clarke, R. J., 73-74, 78-80, 136, 155 



Cobb, S., 106, 155 



Coefficient of variation, see under 

 Capacity, endocranial, variability 

 of 



Communication, 116, 140-42, 144; 

 threshold for, 140-41 



Connolly, C. J., vii, 155 



Cooke, H. B. S., 99, 155 



Coon, C. S., 93, 155 



Cooper, D. M., vii, 155 



Cranial capacity, see Capacity, endo- 

 cranial 



Crocodile, 107 



Culture, evolution of, viii, 115-16, 120, 

 126, 136-37, 138 ff.; and survival, 

 viii, 137-38, 143, 148; adaptation 

 of, 138; diversification of, 138 



Cuvier, G. L. C. F. D., 106 



Cybernetic systems, 144-45 



Damage to bones, 7, 9, 128, 130-31 

 Dart, R. A., 12-15, 17-18, 22, 28, 46, 



60, 116, 127 ff., 134, 138, 155 

 Darwin, C, 138, 143, 147, 155 

 Dobzhansky, T., 139, 143-44, 155 

 Donaldson, H. H., 10, 155 

 Donisthorpe, J., 118, 155 

 Dubois, E., 66-67, 81-85, 87, 110, 



1 55-5 6 

 Dura mater, weight and volume, 11; 



see also Meninges 



Dustmann, H. O., 108, 162 



Edinger, T., vii, 156 

 Eiseley, L., 100-1, 147, 156 

 Elephas indicus, 106—7 

 Elliott, K. A. C, 104, 164 

 Endocast, see Endocranial cast 

 Endocranial cast, 105; convolutional 

 impressions, 2, 5; vascular impres- 

 sions, 2, 5, 7, 105; artificial, 3-4, 24- 

 26, 64-66, 73-74, 78-79, 85; natural, 

 4, 23; impression of cerebellum, 5- 

 7; impression of cerebrum, 5-7; im- 



yt .66 



