Embryo, development of, 231 earliest stages of, 232, 233 position of, 230 removal of, from egg, 231 stages: I., 233; II., 235; III., 240; IV., 247; V., 249; VI., 257; VII., 266; VIII., 267; IX., 273; X., 282; XI., 293; XII., 293; XIII., 300; XIV., 307; XV., 316; XVI., 317; XVII., 318; XVIII., 328; XIX., 328; XX., 329; XXI, 333; XXII., 334; XXIII., 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 Eustachian tube, 72, 149 Everglades, 10, 220 External auditory meatus, 70, 73, 148 External mandibular foramen, 75 Extracolumellar cartilage, 74 Eye, 144 glands of, 144 Eyeball, 146 Eyelids, 144 development of, 329, 332 Feeding of alligators, 15 Fenestra ovalis, 73 Fissura ventralis, 131 Food of alligators, 15 Foramen ovale of skull, 68 Forebrain, 274, 276, 284, 291, 294, 302, 308, 319 Foregut, 240, 248, 252, 297 Foreskin, 195 Fort Pierce, Fla., 27 Fourth ventricle, 132 Fronto-nasal region, 318 Fundic region of stomach, 152 Gastroliths, 44, 45, 153 Gavial, 6 food of, 44 Indian, distribution of, 43 eggs and nest of, 44 meaning of, 44 Gavialidæ, 1, 3 Gavialis gangeticus, 2 character of, 43, 44 size of, 43 Genital ducts, 156 Geographical distribution of Crocodilia, 6 Gescmackwärzchen, 165 Gharial, 44 Gill clefts, 277, 283, 285, 293, 294, 299, 301, 302, 303, 316, 317, 318, 323, 336 Gizzard, 153 Glans penis, 195 Glenoid cavity, 81 Glomeruli, 304 Glottis, development of, 324 Growth of alligators, 16 Hallux, 88 Harderian gland, 136, 145 Head-fold, 233, 236, 237 Heart, 202, 204 development of, 267, 270, 279, 283, 287, 297, 303, 310 Hindbrain, 277, 284, 294, 308, 319 Histology of enteron, 157 of integument, 48 Horn alligator, 31 Horny layer, 48 Hyoid, 151 development of, 330 Hyomandibular cleft, 286, 307, 309, 322 Hypophysis, 53, 133 development of, 306, 320, 331, 337 Incubation, period of, 25 Infundibulum, 133, 134 development of, 330 Integument, histology of, 48 Internal auditory meatus, 73 Internal mandibular foramen, 76 Intestine, 154 development of, 289 Iris, 146 development of, 321 Jacksonville, Fla., 34 Kidneys, 192 Kissimmee, Fla., 27 Labyrinth, 148 Lachrymal canal, 145 Lachrymal gland, 144, 145 Lake Kissimmee, 10 Lake Worth, 37 Large intestine, epithelium of, 187 histology of, 186 _see_ Rectum Larynx, 197 development of, 323 Lateral disks of stomach, 153 Lateral ventricle, developing, 319 Laying season of alligator, 18 Lens, 147