352 
Crocodile— Continued 
African, caves of, 41 
distribution of, 40 
egg laying of, 41 
held sacred, 40 
in Madagascar, 40 
mentioned by Herodotus, 40 
Voeltzkow's account, 40 
American, 2, 37 
colors of, 39 
distribution of, 38 
Ditmars’ experience, 38 
range of, 37 
cataphractus, 2 
Cuban, 2, 39 
derivation of name of, 40 
Guatemala, 2 
intermedius, 2, 39 
johnstoni, 2 
Madagascar, 2 
eggs of, 228 
hatching of, 41 
nest of, 41 
man-eating, 40, 43 
marsh, or mugger, 42 
moreletti, 2 
Nile, 21, 39 
niloticus, 2, 39 
Orinoco, 2, 39 
palustris, 3, 42 
migration of, 42 
porosus, 2 
thombiferus, 2, 39 
robustus, 2 
rough-backed, 3 
salt-water, 2, 42 
in captivity, 43 
habitat, 43 
size of, 42 
skeleton of, 51 
sharp-nosed, 2 
Siamese, 2 
swamp, 3 
Crocodilia, 1 
Crocodilide, 1, 2, 3 
Deaths by crocodiles in Africa, 40 
in India, 43 
Deltoid ridge, 83 
Dentine, 65 
Dermal skeleton, 47 
Diaphragm, 115 
Index 
Digestive system, 152 
Digestive tract, fixation of, 159 
histology of, 189 
outline of, 158 
Digits, development of, 329, 332 
Dinosauria, 4 
Dorsal aorta, development of, 277, 
278, 327 
Dorsal fissure, 131, 132, 133 
Dorsal shield, 47 
Drum, 148, 149 
Ductus Cuvier, 312 
Ear, 147, 148 
Ectoderm, 233 
Eggs, 227, 231 
artificial incubation of, 24 
incubation of, 22 
number of, per nest, 21, 22, 23 
shape of, 228 
shell of, 228 
size of; 25, 227, 228 
taken from oviduct, 24 
variation in size of, 26 
weight of, 25 
Elizabeth Thompson 
Fund, 226 
El lagarto, 40 
Embryo, development of, 231 
earliest stages of, 232, 233 
position of, 230 
removal of, from egg, 231 
stages: I., 233; II., 235; IIL, 
240; IV., 247; V., 249; VL., 
257; VII., 266; VIIL., 267; 
IX., 273; X., 282; XI., 293; 
XIL., 293; XIII., 300; XIV., 
307; XV., 316; XVI, 317; 
XVII., 318; XVIII., 328; 
XIX., 328; XX., 329; XXL, 
333; XXII., 334; XXIIL, 
334 
Embryology, summary of, 335 
Enamel, 65 
Endoskeleton, 50 
Enteron, development of, 261, 
262, 269, 271, 278, 287 
Entoderm, 234 
Epidermal skeleton, 46 
Epiglottis, 197 
Episternum, 81 
Epitrichial cells, 48 
Science 
