488 



INDEX 



gizzard, of bird, 34S; of earthworm, 171. 



gland, ductless, 253; of frog, 252; mam- 

 mary, 419 ; mucous, 253 ; poison, 253 ; 

 salivary, 2$^ ; sebaceous, 399, 400, 

 407 ; sweat, 407. 



glandular cells, of Hydra, 201, 203. 



glass "snake," 322, 323. 



Globigerina, 225, 226. 



glochidium, 151, 152. 



gnawing animals, 405. 



gnu, 439- 



goat, 418, 439, 450, 451. 



Goniobasis, 162. 



gopher, pocket, 433, 434; striped, 431. 



Gordius, 178. 



gorilla, 446. 



goshawk, 388. 



Grantia, 213. 



grasshopper, 8-23; blood of, 15; cir- 

 culation in, 14 ; digestion in, 13 ; ex- 

 cretion in, 15; food of, 13; habitat 

 of, 9; legs of, 10; locomotion of, 9; 

 metamorphosis of, 19 ; nervous sys- 

 tem of, 17; protection of, 16; rela- 

 tions to man, 20 ; reproduction of, 18- 

 19; respiration in, 15; sense organs 

 of, 16; wings of, 9-10. 



ground hog, 432. 



grouse, 365. 



growth, 241. 



grub, 20. 



guanaco, 450. 



guinea fowl, 381. 



gull, 365. 



gullet, of Euglena, 224; of Paramecium, 

 219. 



habitat, aerial, 2 ; fresh-water, 3 ; law 

 of, 416-417 ; of Hydra, 200; of 

 mammals, 398; parasitic, 3; sea 

 water, 3 ; terrestrial, 2. 



haddock, 289. 



haemoglobin, 248. 



hair, contour, 400 ; of insects, 16; of 

 mammals, 399, 400; woolly, 400. 



hake, 289. 



halibut, 288. 



Harvey, 248. 



harvestman, 118. 



hawk, 388, 407; chicken, 379; Cooper, 

 379; hen, 379; red-tailed, 347, 355, 

 356, 357, 379; roughleg, 379. 



hearing, of grasshopper, 17 (see ear, and 

 sense organs). 



heart, of bird, 348; of crocodile, 331 ; of 

 frog, 249; of grasshopper, 12, 15 ; of 

 insect, 14 ; of lamprey eel, 269 ; of 

 mammal, 406; of turtle, 311 (see cir- 

 culation). 



hellbender, 300. 



Hemiptera, 108. 



hen, 380. 



herbivorous animals, 405. 



hermaphroditic animals, 185, 262. 



heron, great blue, 364, 367 ; snowy, 384. 



herring, 288. 



hibernation, of Amphibia, 305; of mam- 

 mals, 413-414. 



highways, law of, 417. 



Hirudo, 175. 



holophytic nutrition, 224. 



holozoic nutrition, 224. 



HominidcE, 447-449. 



Homo, 447. 



honeybee, 63-64 ; colony of, 205 ; legs 



of, 27-2Q. 



honeycomb, 64, 65. 



honevdew, 42. 



hoof, 401. 



hookworm, 179, 182. 



hopperdozer, 22. 



horns, 401. 



horse, 441, 450; botfly of, 48, 49; clas- 

 sification of, 104. 



house fly, 73-85; breeding habits of, 80; 

 control of, 80-83 ; distributor of dis- 

 ease germs, 73-85; enemies of, 81; 

 foot of, 75 ; germs carried by, 77 ; 

 maggot of, 80, 81 ; mouth parts of, 76 ; 

 proboscis of, 76 ; pupa of, 80, 81. 



humerus, 255. 



hummingbird, 373 ; egg of, 354. 



Huxley, 5. 



hyaena, 424, 425. 



hydatid, 190, 191. 



Hydra, 198, 199-204 ; anatomy of, 199; 

 cells of, 201 ; digestion in, 203 ; ecto- 

 derm of, 202 ; entoderm of, 202 ; habi- 

 tat of, 200 ; nematocysts of, 200 ; pro- 

 tection of, 200; regeneration of, 204; 

 reproduction of, 203. 



hydrophobia, 22S. 



Hydrozoa, 210. 



Hymcnoptera, 109. 



