INDEX. 



475 



Functions (basal), 60 

 Fur (see hair) 



Galea, 269 



Gallinse, 412 



Callus, 413 



Gamete, 151 



Gammarus, 291 



Ganglion, 55 



Ganoidei, 368 



Gar-pike, 368 



Gasteropoda, 254 



Gastrophilus, 296, 297 



Gastro-vascular cavity, 170, 171 



Gastrula, 33, 34 



Gavials, 392 



Geese, 411 



Gelatinous tissue, 48 



Genae, 269 



Genus, 102 



Germinal layers, 35 



Germinative epithelium, 341 



General characters protozoa, 145 ; 

 porifera, 157; ccelenterata, 170; un- 

 segmented worms, 183 ; echino- 

 derms, 203 ; annulata, 219 ; mol- 

 lusks, 239 ; arthropods, 274 ; chor- 

 data, 308 ; vertebrates, 321 ; fishes, 

 355 ; amphibia, 372 ; reptiles, 381 ; 

 birds, 396 ; mammals, 428 



General survey protozoa, 144; pori- 

 fera, 157 ; 159 ; ccelenterata, 168, 

 170; echinoderms, 203; unseg- 

 mented worms, 183 ; annulata, 221 ; 

 mollusks, 240 ; arthropods, 275 ; 

 vertebrates, ch. XIX ; fishes, 355 ; 

 amphibia, 372 ; reptiles, 380 ; birds, 

 396 ; mammals, 429 



Gila-monster, 388 



Gill-arches, 334 



Gills, 63, 334 



Girdles, 328, 329 



Gizzard, 277, 332, 333 



Glands, 42; in mammalia, 324, 431 



Glass-snake, 388 



Glosso-pharyngeal nerve, 349 



Glottis, 335 



Gnats, 297 



Goblet cells, 43 



Goldfinch, 422 



Gonads, 175 (see ovary and testis) 



Grallatores, 411 



Grantia, 156 



Grasshopper, 266 



Green gland, 264, 280 



Grouse, 413 



Growth, 13, 67 



Guinea-fowl, 413 



Gulls, 411, 409 

 Gymnophiona, 379 



Habits and habitats (see ecology) 



Hsemocele, 276 



Haemoglobin, 336 



Hair, 431 



Hair-follicle, 430 



Hares, 444 



Harvest-men, 306 



Hawks, 417 



Haversian canal, 49 



Hearing, 75 (see ear) 



Heart, 336 (see circulatory system) 



Hedge-hog, 446 



Helix, 241, 256 



Heloderma, 390 



Hemiptera, 296 



Hepatic portal circulation, 362 



Heredity, 92 ; carriers of, 93 



Hermaphroditism, 69, 163 



Hermaphrodite * organs tapeworm, 



192 ; snail, 249 

 Hermit crab, 116, 178 s 

 Heron, 410, 412 

 Hessian fly, 298 

 Heterocercal tail, 358 

 Heteromya, 254 

 hexapoda, 293 

 Hippopotamus, 442 

 Historical general, 6; protozoa, 151 

 Histology defined, 3 

 Hog, 442 



Holothuroidea, 214^ 

 Homarus, 289 

 Homocercal tail, 358 

 Homology, 78 

 Horned-toad, 388 

 Hornbill, 419 

 Horse, 442 

 Horse-mussel, 254 

 Humming-bird, 422 

 Hybrid, 102 

 Hydra, 165, 169 

 Hydractina, 178 

 Hydroid type, 170 

 Hydrozoa, 177 

 Hylocichla, 423 

 Hymenoptera, 303 

 Hypoblast, 34 (see entoderm) 



Ichneumon fly, 303 

 Imago, 285 

 Incisor teeth, 432 

 Infusoria, 154 

 Ingestion of food, 61 

 Insectivora, 445 

 Insects, 293 



