424 
INDEX. 
Echinoidea, 261, 28, 39, 96, 97, 214. 
Echinus, 262, 214. 
“ see Sea-urchin. 
Ectoderm, 246, 166. 
Edentata, 344, 101, 333, 334. 
Egg, fertilization of, 197. 
“ form of, 195. 
“ number of, 195. 
“ segmentation of, 197, 165. 
“ structure of, 192,161-164. 
Elasmobranchii, 314, 287, 288. 
“ see Ray, Shark. 
Elater, 299. 
Elephant, 350, 65. 
“ brain of, 170. 
“ foot of, 164, 129. 
“ skeleton of, 119. 
“ teeth of, 69, 36. 
“ trunk of, 50. 
“ tusks of, 71, 66, 119. 
“ voice of, 190. 
Elytra, 160, 297. 
Embryology, 12,197. 
Emu, 327. 
Enamel, 3S, 66, 31. 
Encephalon, 174. 
Enderon, 127. 
Endoderm, 246,166. 
Endosarc, 75. 
Endoskeleton, 127, 137. 
Entomostraca, 284, 177, 255. 
Ephemera, 295. 
Epiblast, 199,169. 
Epidermis, 34. 
Epiglottis, 119, 27,159. 
Epithelium, 33, 2. 
Equus, see Horse. 
Euplectella, 246. 
Eustachian tube, 179,152. 
Excretion, 121. 
Excretory organs, 125. 
Exoskeleton, 127, 129. 
Eye, of Invertebrates, ISO, 153-156. 
“ of Vertebrates, 183. 
“ development of, 204. 
Facial Angle, 308. 
Falcon, 335. 
Family, 235. 
Fat, 88, 384,10. 
Feathers, 137, 105. 
“ development of, 204. 
Felis, 355,106. 
“ see Cat, Lion. 
Fertilization of Egg, 197. 
Fibrin, 98. 
Fishes, 310. 
“ air-bladder of, 117, 48. 
“ alimentary canal of, 80, 48. 
“ blood of, 99,100, 65. 
“ brain of, 172, 139. 
Fishes, circulation in, 108, 71, 75. 
“ eye of, 184. 
. “ fins of, 158,123. 
“ gills of, 114, 48. 
“ heart of, 108, 48. 
“ locomotion of, 159,124. 
“ mouth of, 61. 
“ muscles of, 157, 48. 
“ number of species of, 313. 
“ ovary of, 48. 
“ pancreas of, 123. 
“ prehension of, 54. 
“ scales of, 135,102, 283. 
“ skeleton of, 112. 
“ skull of, 138, 112. 
“ teeth of, 61, 67, 32. 
Fish-hawk, 335, 818. 
Fission, 191, 160. 
Flagella, 154, 187. 
Flagellata, 243,187. 
Flamingo, 331, 125. 
Flea, 300. 
Flight of Bats, 161. 
“ of Birds, 160. 
“ of Insects, 159. 
Fluke, 265. 
Fly, 300. 
“ buzzing of, 188. 
“ foot of, 127. 
“ metamorphosis of, 270. 
“ mode of feeding of, 50. 
“ mouth of, 59, 24. 
“ see Diptera, Mosquito. 
Fly-catcher, 338, 322. 
Flying Fox, 346. 
Follicle, 123, 90. 
Food, 47-49. 
Foramen, 141, 267, 291. 
“ magnum, 172. 
Foraminifera, 51, 129, 241, 15, 185. 
Formica. 304. 
Forms of animals, 222. 
Fowl, 85, 50. 
Fox, 355, 349. 
Frog, 54, 318,140, 297. 
“ alimentary canal of, S2. 
“ blood-corpuscles of, 99, 63-65. 
“ breathing of, 119. 
“ circulation in, 108, 76. 
“ food of, 49. 
“ heart of, 108. # 
“ lungs of, 118, 85. 
“ lymph-heart of, 96. 
“ metamorphosis of, 209. 
“ respiration in, 117-119. 
“ skeleton of, 119,140,145, 87. 
“ tongue of, 61. 
“ vertebrae of, 140, 87. 
Fruit-moth, 303, 275. 
Functional. 
Fuugia, 252, 202. 
