INDEX 



Jaw — (Coniinued) 



Primary — (Continued) 



shark, 10(i, Fig. 7, 17; Fig. 8, 

 18; of primitive sharks, 109; 

 of lower primates, in relation 

 to eyes, 60; buds of, in hu- 

 man embryo. Fig. 69, 127 

 Primary Upper, elimination of 

 teeth in, 115; methods of 

 attachment of, 104, Fig. 62, 

 105; palatoquadrate cartilage, 

 102; traces of, in mammalian 

 embryo, lOG; retained teeth 

 in Amphibia, 115; of Bapketes, 

 Fig. 63, 108; of Devonian 

 crossopts, 109; of Eusthenop- 

 teron. Fig. 63, 108 

 Primary Lower, coronoid bones 

 of, in crossopts, 110; develops 

 into articular bone, 112; 

 Meckel's cartilage, 102 

 Secondary, definition and de- 

 scription, 107; elements of 

 the, 107; shows unity of 

 origin of higher vertebrates, 

 107; in sharks, represented 

 only by skin, 106 

 of armadillo, foetal, relation 

 of ossicles to. Fig. 114, 221 

 of crossopts, 109; also 113 

 of Dryopithecus, section of. 



Fig. 45, 71 

 of Eodelphis, Fig. 27. 48 

 of Leipsanolestes siegfriedti. 



Fig. 37, 61 

 of man, influenced by size and 



function of tongue, 126 

 of man, longitudinal section, 



Fig. 68, 125 

 of man, Cro-Magnon, section 

 of. Fig. 45, 71; Ehrings- 

 dorf, section of. Fig. 45, 71; 

 Heidelberg, section of. Fig. 

 45, 71; Neanderthal, section 

 of. Fig. 45, 71; Piltdown, 

 Fig. 41, facing 66, 142; 

 Piltdown, section of. Fig. 

 45, 71 

 of Megalichthys, Fig. 64, 111 

 of monkey, longitudinal sec- 

 tion. Fig. 68, 125 

 of Mycterosaurus, 34 

 of Peli/codus trigonodus. Fig. 



37, 61 

 of Seymouria, 32 



of Trimerorhachis, Fig. 64, 111 

 Jaw muscles 



of Chlamydoselachiis, Fig. 61, 



103; also Fig. 8, 18 

 of Cynognathus, Fig. 61, 103 

 of Didelphys, Fig. 61, 103 

 of Fry ops. Fig. 61, 103 

 of fishes, their evolution, 104 

 of man, evolution of. Fig. 61, 



103 

 of Notharctus, Fig. 61, 103 

 of chimpanzee. Fig. 61, 103 

 of Poiypterus, Fig. 61, 103 

 of Scymnognathus, Fig. 61, 103 

 of shark, their derivation, 104 

 Jellyfish, mouth of the, 4, 5; eyes 

 of, 174; eye of, (Sarsia), 

 section of. Fig. 91, 175; 

 Tessera, Fig. 1, 5 

 Jugal bone (malar), 83; series of 

 skulls showing evolution of. 

 Fig. 51, 81; Fig. 53, 85; joint 

 process of frontal and malar 

 replaces reptilian postorbital, 

 90 



Karroo (Africa), mammal-like 

 reptiles of. Fig. 20, 35-36 



Keel bone, see Parasphenoid bone 



Keith, Sir Arthur, on the develop- 

 ment of the human ear, 212; 

 his studies of abnormal 

 human types, 229; "Mor- 

 phology and Embryology," 

 157; on the primate dia- 

 phragm, abdomen and pelvic 

 floor, 63; his study of growth, 

 237; on the evolution of the 

 human face, 120; on the hind 

 feet of primates, 54 



Kiaer, J., on ostracoderms, 10 



King crab (Limuhis), 7 



Kinsfolk, Some of Our Earliest, 

 Fig. 4, 11 



Krapina race (Neanderthal), 

 "shovel shaped" incisors of, 

 138 



Labial cartilages, of shark 

 {Chlamydoselachus), Fig. 6, 

 13; Fig. 7, 17; Fig. 8, 18; 130 

 Labidosaurus, head of. Fig. 23, 42 

 Labyrinth, embryonic develop- 

 ment of, 204 

 of alligator. Fig. 104, 205 



274 



