5 so 



INDEX 



Galls, 117, n8 



Gallus, 424 



Gamete, 159 



Gammarus, 296 



Ganglion, 62, 348 



Gar-pike, 373 



Gasteropoda, 261 



Gastrophilus, 301, 302 



Gastro-vascular cavity, 178, 181 



Gastrula, 38, 39 



Gavials, 397 



Geese, 416 



Gelatinous tissue, 55 



Genae, 273 



Genus, iii 



Germinal layers, 40 



Germinative epithelium, 345 



General characters — protozoa, 153; 

 porifera, 166; ccelenterata, 177; un- 

 segmented worms, 191; echino- 

 derms, 211; annulata, 276; moUusks, 

 245, arthropods, 278; chordata, 311; 

 vertebrates, 324; fishes, 359; am- 

 phibia, 376; reptiles, 386; birds, 401; 

 mammals, 439. 



General survey — protozoa, 152; por- 

 ifera, 166, 168; ccelenterata, 179; 

 echinoderms, 212; unsegmented 

 worms, 191; annulata, 226; moUusks, 

 244; arthropods, 277; vertebrates, 

 ch. XIX; fishes, 360; amphibia, 376; 

 reptiles, 386; birds, 402; mammals, 

 440 



Geographical distribution, 484 



Gephyrea, 204 



Germ cell cycle, 33, 34, 42 



Germ plasm, 496 



Gila-monster, 394 



Gill-arches, 337 



Gills, 70, 337 



Girdles, 331, 333 



Gizzard, 281, 336, 405 



Glands, S^i S3 > ii mammalia, 442 



Glass-snake, 394 



Glosso-pharyngeal nerve, 353 



Glottis, 338 



Gnats, 301 



Goblet cells, 50 



Goldfinch, 427 



Gonads, 184 (see ovary and testis). 



Grallatores, 412 

 Grantia, 165 

 Grasshopper, 271, 298 

 Green gland, 284 

 Grouse, 418, 422 

 Growth, 14, 74 

 Guinea-fowl, 417 

 Gulls, 414, 415 

 Gymnophiona, 384 



Habits and habitats (see ecology), 134, 



460 

 Haemocele, 280 

 Haemoglobin, 338 

 Hair, 441, 442 

 Hair-follicle, 327 

 Hares, 458 



Harmful animals, 513 

 Harvest-men 310 

 Hawks, 420 

 Haversian canal, 57 

 Hearing, 82 (see ear). 

 Heart, 339 (see circulatory system). 

 Hedge-hog, 447 

 Helix, 247, 262 

 Heloderma, 395 

 Helodrilus, 223 

 Hemiptera, 300 

 Hepatic portal circulation, 365 

 Heredity, 100, 496; carriers of, 102 

 Hermaphroditism, 75, 233 

 Hermaphrodite organs — tapeworm, 



199; snail, 233 

 Hermit crab, 125, 187 

 Heron, 415 

 Hessian fly, 302 

 Heterocercal tail, 362 

 Heteromya, 260 

 Hexapoda, 298 

 Hippopotamus, 443 

 Historical; — general, 6; protozoa, 160; 



of zoology, 518 

 Histology — defined, 4 

 Hog, 454 

 Holostei, 373 

 Holothuroidea, 221 

 Homarus, 294 

 Homocercal tail, 363 

 Homology, 85 

 Hookworm, 201 



