INDEX 



457 



Generation, alternation of, 272 ; spon- 

 taneous, 446 



Genus, 107 



Germ cells, 133 



Giant water bug, 42 



Gila monster, 356 



Gill chamber, 148 



Gill slits, 304 



Gill-bailer, 148, 152 



Gill-rakers 314 



Gills, blood, 95 ; tracheal, 28, 95 



Giraffes, 418 



Gizzard, 6, 370 



Gizzard shad, 329 



Glacial Epoch, 435, 437 



Glands, calciferous, 240; green, 146, 

 153; silk, 62 



Glass snake, 355 



Glochidium, 203 



Glottis, 372 



Glycerin, 119 



Glycogen, 123 



Goats, 418 



Goldfishes, 329 



Gonads, 11, 127, 128, 154 



Gorilla, 428 



Grasshoppers, 1 ; common red-legged, 

 1, 107; control of, 15; lesser, 1, 

 107; long-horned, 17 ; meadow, 18; 

 Rocky Mountain, 1, 107 



Grassi, Professor, on malaria, 297 



Green gland, 146, 153 



Grouse, 385 



Grubs, white, 44 



Guest bees, 86, 88 



Guinea pigs, 177, 422 



Gulls, 378 



Gypsy moth, 66 



Habitat, 1, 107 



Haemoglobin, 122 



Hair snakes, 260 



Halibut, 325 



Hall, M. C., on cure for hookworm, 



259 

 Halteres, 69 

 Hares, 422 

 Harvest fly, 30 

 Harvest mites, 143 

 Harvestmen, 141 

 Hawk moths, 64 

 Hawkbill, 362 

 Hawks, 387 



Health Board, International, 449 

 Hemiptera, 30, 42 

 Hereditary characters, 134 

 Heredity, 173 ; Mendel's law of, 176 

 Hermaphroditic, 206, 210, 245 

 Herodiones, 382 

 Herons, 382 



Hessian fly, 76 



Heterozygous, 178 



Hexactinellida, 307 » 



Hexapoda, 95, 309 



Hinge ligament, 189 



Hippopotamus, 417 



Hirudinea, 308 



History of zoology, 441 



Holothuroidea, 309 



Homing pigeons, 376 



Homologous, 151 



Homology, 150 



Homoptera, 30, 38 



Homozygous, 178 



Honey, 83 



Honeybee, 83 



Honeydew, 33 



Hoofed mammals, 417 



Hookworm Commission, 259 



Hookworms, 258 



Hopperdozer, 16 



Horn, 430 



Hornets, 79 



Horns, 419 



Horses, 418, 434, 437 



House cricket, 18 



House flies, 69 



Hover flies, 73 



Howard, L. O., on malaria, 102 



Huxley on man and apes, 429 



Hybrids, 108 



Hydra, 267, 308 



Hydroids, 271 



Hvdrozoa, 273, 308 



Hyenas, 423 



Hymenoptera, 94 



Hypopharynx, 3, 6 



Hypophysis, 128 



Ichneumon flies, 92 



Icteridse, 393 



Iguana, 356 



Imaginal disks, 96 



Imago, 14, 96 



Incisors, 404 



Insect, behavior of, 96 ; control of, 99 



Insecticides, 100 



Insectivora, 426 



Insects, 95, 309 ; control of, 99 ; dis- 

 ease-causing, 101 ; distribution of, 



- 114; economic importance of, 99; 

 fossil, 113; generalized, 111; house- 

 hold, 101; pollination by, 105; 

 relation of, to flowers, 104; sim- 

 plest, 109; specialized, 111; versus 

 man, 98 



Instinctive action, 97 



Intelligence, 98 



Internal secretions, 127 



Interstitial cells, 128 



