INDEX 



Didelphodus, dentition of. Fig. 77, 

 U7 



Didelphys, Fig. 26, facing 46; jaw 

 muscles of. Fig. 61, 103; skull 

 of. Fig. 28, 49; skull compared 

 with Eoddphht, Fig. 27, 48 



Diet, changes in diet of primitive 

 man, 75; probable carnivor- 

 ous diet of man's ancestors, 

 152; characters of early pri- 

 mates adapted to, 67; of pre- 

 vertebrates, 95; later dietary 

 habits of man, 70 



Dinaric type of nose. Fig. 89, 

 facing 170 



Dipnoi, modern survivors of, 24; 

 removed from main line of 

 ascent, 25; embryonic devel- 

 opment of, 25; nose of, 157; re- 

 spiration of, 122,157; Dipterus 

 (Devonian), Fig. 13, facing 

 24 



Dipterus (Devonian), Fig. 13, 

 facing 24 



Disharmonic types of human face, 

 237 



Dogs, acromegaly in, 231; ateleosis 

 in, 231 



Dryopithecus, dentition of. Fig. 78, 

 148; derivation of human 

 dentition from, 58; lower jaw 

 of. Fig. 45, 71; D. cautleyi, 

 premolars, lower front. Fig. 

 75, 144; molars, lower. Fig. 

 79, 150; D. fontani, premolars 

 of. Fig. 75, 144; molars of. 

 Fig. 79, 150; D.fnckce, molars 

 of. Fig. 41, facing 66, Fig. 79, 

 150; D. rhenanus, molars of. 

 Fig. 38, 62; comparison of 

 upper molars with human, 

 149 



"Dryopithecus pattern," 149, Fig. 

 41, facing 66; in teeth of 

 anthropoids, Fig. 79, 150; 

 in teeth of man. Fig. 80, 151 



Dilchenne, G. B., his study of 

 physiognomy, 223 



Dwarf, achondroplastic, nose of, 

 169; skull of, 230 



Ear, evolution of the primate, 63; 

 evolution of auditory ossicles, 

 215, Fig. 115, 221; innerva- 



tion of the muscles of, 219; 



movement of, 133 

 External ear, of antelope, 211 



of bat, 211 



of chimpanzee. Fig. 110, 213 



of Echidna, 210 



of elephant, 211 



of gibbon (Ilylobatcs), Fig. 

 110, 213 



of gorilla, Fig. 110, 213 



of lemur {Lemur caita), 212 



of lemuroid {N ycticebus) , Fig. 

 110, 213 



of macaque, foetal. Fig. 109, 

 212 



of mammals, 211 



of monkeys, 212 



of primates, lower, 57 



of orang. Fig. 110, 213 



of whale, 211 



origin of. Fig. 108, 211; 

 development of, 211; aid in 

 development of man, 202; 

 types of mammalian, 211; 

 function of human, 202; 

 approach to monkey type 

 of fcetal human, 214; 

 "chimpanzee type" of hu- 

 man. Fig. 110, 213; re- 

 semblance of human and 

 anthropoid, 214 

 Inner ear 



of alligator. Fig. 104, 205, 207 



of frog, Fig. 106, 208 



of ganoid {Lepidostexis), Fig. 

 104, 205 



of man. Fig. 103, 203, Fig. 

 104, 205, Fig. 105, 206 



of rabbit. Fig. 104, 205 



of reptile, primitive {Hat- 

 teria). Fig. 104, 205; see also 

 Sphenodon 



of shark {Acanthias), Fig. 

 104, 205 



derivation from ectoderm of, 

 204; components of, 202, 

 204; functions of, Fig. 103, 

 203, 204; evolution of, fish 

 to man. Fig. 104, 205 

 Middle ear 



of ancient and modern Am- 

 phibia, 29 



of frog, 207; Fig. 106, 208 



of mammal-like reptiles. Figs. 

 112, 113, 217, 218 



266 



