538 



INDEX 



Fluctuations, 488 

 Food value of animals, 498 

 Foraminifera, 161 

 Formative pole, 37 

 Fox, 454-457 

 Fringillidae, 430 

 Frog, 318, 381 

 Frontal section, 91 

 Fruit-borers, 304 

 Functions (basal), 65 

 Fur (see hair). 



Galea, 273 



Gallinae, 421 



Galls, 115, 116 



Callus, 423 



Gamete, 158 



Gammarus, 295 



Ganglion, 61, 347 



Ganoidei, 372 



Gar-pike, 372 



Gasteropoda, 260 



Gastrophilus, 300, 301 



Gastro-vascular cavity, 177, 180 



Gastrula, 38, 39 



Gavials, 396 



Geese, 415 



Gelatinous tissue, 54 



Genae, 272 



Genus, 109 



Germinal layers, 40 



Germinative epithelium, 344 



General characters protozoa, 152; 

 porifera, 165; ccelenterata, 176; un- 

 segmented worms, 190; echino- 

 derms, 210; annulata, 275; mollusks, 

 244, arthropods, 277; chordata, 311; 

 vertebrates, 323; fishes, 358; am- 

 phibia, 375; reptiles, 385;. birds, 400; 

 mammals, 438 



General survey protozoa, 151; por- 

 ifera, 165, 167; ccelenterata, 178; 

 echinoderms, 211; unsegmented 

 worms, 190; annulata, 226; mollusks, 

 244; arthropods, 277; vertebrates, 

 cb, XIX; fishes, 359; amphibia, 375; 

 reptiles, 385 ; birds, 401 ; mammals, 439 



Geographical distribution, 478 



Gephyrea, 203 



Germ cell cycle, 33, 34, 42 



Germ plasm, 489 



Gila-monster, 393 



Gill-arches, 336 



Gills, 69, 336 



Girdles, 330, 332 



Gizzard, 280, 335, 404 



Glands, 50, 52; in mammalia, 441 



Glass-snake, 393 



Glosso-pharyngeal nerve, 352 



Glottis, 337 



Gnats, 300 



Goblet cells, 49 



Goldfinch, 426 



Gonads, 183 (see ovary and testis). 



Grallatores, 411 



Grantia, 164 



Grasshopper, 270, 297 



Green gland, 283 



Grouse, 417, 421 



Growth, 14, 73 



Guinea-fowl, 416 



Gulls, 413, 414 



Gymnophiona, 383 



Habits and habitats (see ecology), 132, 



459 



Hasmocele, 279 

 Haemoglobin, 337 

 Hair, 440, 441 

 Hair-follicle, 326 

 Hares, 457 



Harmful animals, 503 

 Harvest-men, 309 

 Hawks, 419 

 Haversian canal, 56 

 Hearing, 81 (see ear). 

 Heart, 338 (see circulatory system). 

 Hedge-hog, 446 

 Helix, 246, 261 

 Heloderma, 394 

 Hemiptera, 299 

 Hepatic portal circulation, 364 

 Heredity, 99, 488; carriers of, 100 

 Hermaphroditism, 74, 232 

 Hermaphrodite organs tapeworm, 



198; snail, 252 

 Hermit crab, 123, 186 

 Heron, 414 



