360 



INDEX AND GLOSSARY 



Foxes, 276, 277. 

 Fresh water clams, 143. 

 Frog, development of, 301. 



structure of, 209-211. 

 Frogs, 204-206. 

 Frogs' eggs, 294-296. 



Galley worm, 133. 



Gall flies, 59-63. 



Gallinse, 253. 



Gang'lion, a group of nerve cells, 



123. 



Garden spider, 129. 

 Garter snakes, 214, 293. 

 Gem'mules (L. gemma, bud), 176. 

 GSn'era, plural of genus. 

 Genus, 28. 

 Ge o ineV ri dae (Gr. ge, earth, and 



metron, measure), 85. 

 Gibbons, 281. 

 Gila monster, 213. 

 Gill arches, the three or four 



bony arches on either side of 



the pharynx of fishes bearing 



the gill tufts, 198. 

 Gills, organs of respiration used 



by most aquatic animals, 162, 



189, 204, 302. 

 Gland, a structure for secreting a 



useful substance, 78. 

 Glass snake, 212. 

 Globigerina, 183. 

 Glow worm, 113. 

 Golden robin, 236. 

 Goose barnacles, 140. 

 Gordius, 156. 

 Gorilla, 281. 

 Grackles, 236. 



Grain, insects injurious to, 23. 

 Grain weevil, 108. 

 Grape-vine louse, 97. 

 Grandady -long-legs, 130. 

 Grantia, 175. 

 Grasshopper, anatomy of, 123. 



Grasshoppers, 30, 31. 



sounds of, 37. 

 Grass spider, 126. 

 Great horned owl, 262. 



auk, 335. 

 Green frog, 205. 

 Green turtle, 224. 

 Ground hog, 270. 273. 

 Gymnophiona, 207. 

 Gypsy moth, 80, 126. 



Hairy woodpecker, 247. 



Halibut, 194. 



Hares, 271. 



Harlequin bug, 106. 



Harvest flies, 93. 



Harvestmen, 130. 



Hawk moths, 73, 74. 



Hawkbill turtle, 224. 



Hawks, 12, 248, 249, 253, 254, 



255, 256. 

 Hearing, 307. 

 Heart of Amphibian, 210. 



of crayfish, 136. 



of mammal, 287. 



of reptile, 226. 

 Hedgehogs, 276. 

 Heel fly, 49. 

 Helix, 149. 

 Hellbender, 203. 

 Hellgramite, 116. 

 Heloderma, 213. 

 He mlp' te ra (Gr. Aemi, half, and 



pteron, wing), 26, 91-107. 

 Hen hawk, 251. 

 Hermit crab, 173, 138. 

 Herons, 254, 255. 

 Herrings, 190. 

 Hessian fly, 50, 125. 

 Hgterop'tera, 104. 

 Hibernation, passing the winter 



in a dormant condition, 31. 

 High-holer, 246, 250. 

 Hippocampus, 193. 



