342 



INDEX 



Extensor muscle, 194*, 209. 



Extinction of animals, 295. 



Eye: Crayfish, 195*, 205-208; Honey- 

 bee, 235*, 245-246, 254. 



Eye brush, 236*, 237. 



Eye spot, 81, 83*, 84, 94, 97; Planaria, 

 153*, 154- 



Factors of habitat, 275-276. 



Faeces, 13, 14, 155, 242. 



Family, 3. 



Fatigue, a stimulus, 16. 



Fat, 21, 22, 170. 



Fauna : of islands, 285-286 ; tabulated, 

 277. 



Female, 98. 



Femur, 236*. 



Ferment, 25, 170. 



Fertilization, 104, 105*, 107 ; chromo- 

 somes in, 107; nuclei in, 106: Ascaris, 

 161 ; Crayfish, 214; Earthworm, 185 ; 

 Eudorina, 96; Grantia, 149; Honey- 

 bee, 251; Hydra, 114, 137; Parame- 

 cium, 67, 69*, 71, 112; Planaria, 156; 

 Plasmodium, 88*, 91, 113; Volwx, 98, 

 114. 



Fever : estivo-autumnal, 89 ; malarial, 

 88, 89, 91-92 ; pernicious, 89 ; quar- 

 tan, 89; tertian, 89; yellow, 80. 



Fission, 15: Ameba, 51*, 52; Euglena, 

 83*, 87; Hydra, 133*; Paramecium, 

 67*-68; Planaria, 156. 



Flagellata, 82. 



Flagellum, 62*, 80, 81, 83*, 85, 86, 87, 93, 

 94, 96, 97, 124, 147. 



Flame cell, 155, 156*. 



Flat worms, 5, 153-160; classification, 

 158; contrasted with Hydra, 159. 



Flea, 298. 



Flexor muscle, 194*, 209. 



Flight, 238. 



Flowers and bees, 262, 263*, 264. 



Fluctuating variation, 281. 



Fol, 36. 



Foliaceous appendage, 196*. 



Food: Ameba, 46; Crayfish, 201 ; Earth- 

 worm, 170; Euglena, 85; Grantia, 

 148; Honeybee, 240, 256; Hydra, 125; 

 Paramecium, 66; Planaria, 155. 



Food vacuole, 148: Ameba, 37*, 47*; 

 Paramecium, 60*. 66*-67. 



Foot: Honeybee, 237*; Horse, 293*; 



Hydra, 117, 118. 

 Forel, 305. 



Form, of organisms, n. 

 Fossil, 2, 279; number, 5, 6. 

 Foul brood, 259. 

 Fusion nucleus, 71, 105*. 



Galapagos Islands, 278. 



Galen, Claudius, 268. 



Galleria mellonella, 258-259. 



Galton, Francis, 289. 



Gamete, 90, 93, 94, 95*, 96, 113. 



Garnet ogenesis, 113. 



Ganglion, 205. 



Gas, in protoplasm, 21. 



Gastraea, 229. 



Gastral cavity, 151*. 



Gastral epithelium, 146, 151*. 



Gastric mill, 200. 



Gastrolith, 200-201. 



Gastrovascular cavity, 5, 118*, 119, 127, 



139- 

 Gastrula, 108, 109*, no, in, 137, 185*, 



1 86, 229. 



Gastrulation, 109*, no. 

 Gemmule, 152. 

 Genital aperture, 161, 210, 211; cloaca, 



156; pore, 153*, 154, 161*. 

 Genus, 3. 



Geobiotic fauna, 277. 

 Geographical distribution, 293. 

 Geographical isolation, 285-286. 

 Geological periods, 279, 280. 

 Geotropism, 54: Paramecium, 77*, 78. 

 Germ band, Honeybee, 252. 

 Germ cells, 98, 102-107, 114, 115. 

 Germ layers, 108, 109*, no, in, 154, 



159, 1 86. 



Germ plasm, 98-99*, 102. 

 Germ plasm theory, 99*, 288-289. 

 Germinal vesicle, 105*, 1 06. 

 Geryonia, 142. 

 Gesner, Conrad, 269. 

 Giant fibers, 178, 179*. 

 Gills, 195, 204. 

 Gizzard, 168*, 169. 

 Gland cells, 124*, 169. 

 Goodsir, 36. 

 Grafting, 24: Earthworm, 190*; Hydra, 



137*, 138. 

 Grantia ciliata, 144-149, 277; anatomy 



