500 



INDE.Y 



nutrition, 331 ; reproduction. 334 ; 



respiration, 333 ; sense-oryaiis of, 



33S ; skeleton of, 329. 

 Frog's egfi, development of, 4.51. 

 FulRur. 217. 

 Fundulus, 319. 



G 



Oadu.s. 316. 



(!a!en, the anatomist, 400. 



(iallej-worm, 100. 



Gall-,gnats, 83. 



Gall-wasp, ,58. 



tJallince, 394. 



Galls, 84. 



Ciallus, 395. 



Cianglia. 9. 



Ganoidei, 323. 



Ganoids, 303. 



Garpikes, 324. 



Garter-snake, 365. 



Gasteropoda, 210. 



Gasteropods, 198 ; form of l>od,\", 10s ; 

 organs of respiratirjn, 202. 



Ga.sterosteus, 315. 



Gastrolith. 137. 



Gastrulation, 457. 



Geese, 425. 



Gelasimus, 143. 



Genera, discontinuous, 133. 



Generations, alternation of, 209. 



Geographical distribution of cray- 

 fish, 128. 



Geometrida', 47. 



Geomys, 448. 



Geophilus, 100. 



Gephyrca, 176. 



Germ-cell, 8, 246. 



Cierm theory of disease, 283. 



Gesner, 460. 



Gibbon, 450. 



Gila nronster, 359. 



(iills, 24; of lobster, 123. 



(!ill-slits, 294^ 295, 28<->r- 



Giraffe, 444, 445. 



Glass-snake, 360. 



GlochicUuni, 229. 



Glossina, 81. 



( llow-worni, 71. 



Gnat, 83. 



Gnawing mammals, 446. 



Goats, 424. 



Goat-.sui-kers, 401. 



Gol.lfish, 319. 



(loi)hcr, 446. 



C.riUa. 450. 



Grallatorcs, 393. 



Grapta, 40. 



Grasshopper, 11; allies of, 16; 



cricket, 20 ; long-horned, 19. 

 Gra>--veined White Butterfly, 34. 

 Great auk. 418. 

 Great northern shrike, 411. 

 Green frog, 348. 

 Green turtle, 362. 

 Gregarious, 13. 

 Ground-beetles, 64. 

 Grouse, 395. 

 Grvllida?, 20. 

 Gryllotalpa, 21. 

 Guinea-fowl, 395. 

 Guinea-pigs, domesticated, 424. 

 Gull, 392.^ 

 G\'mnophiona, 329. 

 Cl>'psy moth, 46. 

 G>'rinida?, 65. 



H 



Habitat : aerial, 12, 371 ; cave, 92-97 ; 



darkness, 90, 91; desert, 349; 



fresh-water, 223 ; land, 325 ; river, 



223 ; seashore, 182 ; sessile, 260 ; 



sub-terrestrial, 168. 

 Htemal, 297. 

 Hair-streaks, 41. 

 Hairy ant-eater, 441. 

 Hairj^ antelope, 401. 

 Hard-shelled clams. 232. 

 Hare, 448. 

 Harvester ant, 55. 

 Harvestmen, 117. 

 Hawk, 396. 

 Hawk-bill turtle, 363. 

 Hawk-moths, 41. 

 Head, 3. 

 Healing, 454. 

 Heart (see Circulation). 

 Heat, effect on development of egg, 



453. 

 Helix, 213; varialiilitv of, 214. 

 Hellbender, 341. 

 Helodermithe, 359. 

 Hcmiptera. 22. 

 Hcmoe^"anin, 204. 

 Hen clams. 231. 

 Hermaphrodite, 160. 

 Hermit-crabs, 138. 

 Heron, 393. 

 Hesperornis, 418. 

 Hessian-fly, 83. 

 Heteroptera, 22. 

 Heterotrichia, 287. 

 Hexapoda, 12. 

 Hippidae, 140. 



