3S6 



INDEX 



Dogfish, muscles of, *75. 



Dolphin, 262. 



Doris luberculata., *I4I. 



Dragon -flies, how to spread and 

 preserve, 336; life-history of, 

 21. 



Dragon-fly, *22 ; egg-laying of, 23; 

 nymphs of, 23, *24; transfor- 

 mation to winged stage, 25; 

 young, circulatory system of, 

 *94; young, mouth parts of, 

 *89. 



Drawings, students', 325. 



Drone of honey-bee, *307. 



Dyticus, *i68; larva of, *i69. 



Ear of man, *i07. 



Ears, 107 



Earthworm, 144; alimentary canal 

 of, *9i. 



Echinodermata, 134, *I35. 



Echinodoris sp., *i4i. 



Eciton, 314. 



Economics of birds, 250. 



Edentata, 256. 



Eel, 212. 



Eft, little green, 219; western 

 brown, *2i8. 

 . Egg-cocoon of labyrinth spider, 

 *38, *2o8. 



Egg-laying of dragon-fly, 23; of 

 silkworm moth, 17. 



Eggs of katydid, *i8i; birds, 

 how to preserve, 340; of cat- 

 fish, 42 ; of mosquitoes, 2, *3 ; of 

 pipe-fish, 43; of salmon, 43; of 

 sea-horse, 43; of silkworms, 9; 

 of snake, 44 ; of Surinam toad, 

 44; of toad, 27. 



Egg-sac of running spider, *39, 



195- 

 Electric ray, 214. 

 Elephantiasis, disseminated by 



mosquitoes, 9. 

 Elk, *264, 266. 

 Energy of animal, how derived, 



78. 

 English sparrow, *59. 

 Epialtus productus, *i55. 

 Erethizon dorsatus, 260; epixan- 



thus, 260. 

 Eumeces skelionianus , *223. 

 Exonautes unicolor, *294. 

 Eye, compound, of dragon-fly, 22 ; 



compound, section of, of moth, 



*ii2; of horse-fly, iii; of 



insect, cornea of, * 1 1 1 ; of 



jellyfish, * 1 1 1 . 

 Eye, section of compound, of 



moth,*n2;of vertebrate, * 1 1 1 

 Eyes, 109; compound, *ii2. 

 Eyes of spider, 193. 



Fangs, poison, of rattlesnake, 



*228. 



Feather, bit of, magnified, *6o. 



Feathers of bird, 60. 



Feeding habits of birds, 250. 



Feet of birds, 245. 



Felidae, 269. 



Felis concolor, 269. 



Ferae, 266. 



Fiber zibethicus, 260. 



Fin of sunfish, 55. 



Fish, circulatory system of, 95; 



flying, parasitized, *294; 



heart of, 94; muscles of, 74; 



porcupine, 213. 

 Fishes, 210; air-bladder of, 84; 



care of young of, 42 ; circulation 



of blood in, 94; colors of, 285; 



how to preserve, 343. 

 Flat-worm, alimentary canal of, 



*92. 



Flight of birds, 248. 



Flounder, 212; winter, *2i3. 



Fly, golden-eyed, *i78; lace- 

 winged, *I78, 179. 



Food, how animals obtain and 

 digest, 86 ; nature of, 88 ; neces- 

 sity of, 77; of crow, 251; spe- 

 cial means to get, 275. 



Forest tent - caterpillar moth, 

 stages of, *i7. 



Formicary, how to make, 310. 



Fox, red, 269. 



Frog, 31. 



Prog-fish and nest, *43. 



Frogs, 217. 



Fur-seal, 268, 269. 



Gall of oak, *37. 



Galley-worm, 159, *i6o. 



Garter-snake, *225. 



Gavial, 229. 



Gephyrean, *I49. 



Gills for respiration, 81 ; of sun- 

 fish, 56 ; tracheal, of nymph of 

 Mayfly, *i63; with head of 

 trout, *82. 



