INDEX 



597 



Extracellular digestion, 13S 



Extra-embryonic coelom, 418, 419 



Eyeball, 332 



Eyelids, 352, 3f>4, 309, 383, 40G 



Eyes, 184, 2 IS, 219, 221-225, 247, 261, 253-266, 

 261, 271-273, 276, 277, 297, 300, 302, 304, 

 312, 332-SSS, 341, 353-354, 357, 3tj2, 307, 

 309, 379, 382, 385, 388, 395-396, 409, 519 



Eyespots, 79, 157, 162, 165, 100, 171, 185, 186, 

 196, 223, 241-243, 245, 247, 314, 315 



Fi, Fi, etc., generations, 531-535 



Factors, 527 



Family, 58, 540 



Family association, 493 



Family name, 58, 540 



Fangs, snakes, 386, 387 



Fasciola hepatica, 170, 171 



Fat tissue, 98, 99 



Fatigue, 467 



Fats, 19, 34, 38, 65, SO, 131, 195. 230, 318, 300, 



454, 455, 401 

 Fauces, 408 



Faunal divisions, 504-509 

 Faunas, cave, 484 



desert, 484 



forest, 484 



fresh-water, 484 



island, 504 



marine, 482, 483, 502 



stream, 484 



terrestrial, 484, 504-509 

 Fear, 473 



Feather stars. 201, 206, 207 

 Feather tracts, 393 

 Feathers, 318, 390-392, 404 



Feces, 36, 42, 05, 171, 173, 177-179, 212, 230, 311 

 Feeble-mindedness, inheritance, 536 

 Feeding and sex determination, 539 

 Felidae, 546 

 Felis, 540 



Female, 44, 89, 104, 105, 101, 178, 179, 186, 213, 

 224, 257, 258, 261, 263, 272, 283, 288, 291- 

 294, 297, 298, 317, 325, 333, 355, 366, 395, 

 403, 404. 443, 448, 493, 537, 538, 539 

 Femur, 272, 319, 321, 388, 391 

 Fenestra ovalis, 330, 331 

 Fenestra rotunda, 330, 331 

 Fermentation, 13, 554 

 Ferments, 13, 27, 102, 464 



(See also Enzymes) 

 Fertilization, 80, 100, 111-113, 132, 140, 141, 

 149, 150, 102, 167, 171, 178, 189, 198, 214, 

 216, 235, 236, 258, 203, 278, 298, 311, 315, 

 334, 341, 355, 443, 493, 528 

 Fetal circulation, 420 

 Fetus, 116, 450 



fibrillar structure, protoplasm, 22 

 Fibrin, 462 

 Fibrinogen, 462 

 Fibrous tissue, 98 

 Fibula, 319, 321, 388, 391 

 Filaria, 181 



Filial generations (see Fi, F2, etc.) 



Filoplumes, 393 



Fin rays, 314, 317, 361 



Final host, 170 



Fingers, 396 



Fins, 185, 222, 313, 314, 317, 346, .348, 349, 361. 



445 

 Fire and body compared, 452 

 Fireflies, 278 

 Fishes, 113, 308, 335-358, 359, 360, 437, 439, 449. 



463, 474, 480, 497, 502, 511, 514, 515, 520 

 Fission, 67-68, 74. 86, 105, 140, 161, 248, 493 

 Fissipedia, 413 

 Flagella. 78-80, 131. 400 

 Flagellata, 78 

 Flagellated cells, 136 

 Flagellated chambers. 130 

 Flame cells, 159. 171. 442. 456 

 Flatworms, 175-174, 438. 442-444, 449, 461, 



462, 470 

 Fleas, 288. 497 

 Flex gliding, 398 

 Flexor muscles, bird, 401 

 Flicker, foot, 400 

 Flies, 275, 278, 282, 287, 2,SS, 485, 498 



foot, 274 

 Flight, 397-400, 413 

 Flight feathers, 392 

 Flint, 83 

 Fluid, 9 



Flukes, 105-166, 170-172. 174 

 fluorine, 19 

 Flying dragon, 383 

 Flying fish, 350 



tail, 349 

 Flying foxes, 506 

 Flying spiders, 299 

 Follicle mites, 302 

 Food, 32-38, 41, 42, 05, 71, SO, 131, 133, 138. 148. 



156. 101. 164. 176, 177. 184, 196, 201, 203. 



205. 212. 225. 226, 228, 230. 240, 250, 256. 



258-259. 269. 270. 277, 282, 288. 289. 292- 



293. 298, 300, 311, 315, 321. 322. 352, 354. 



358, 368, 373, 376, 382-384, 389, 393, 401. 



404, 407, 415, 416, 430. 452, 454, 461, 488 

 Food chains. 480 



Food vacuoles, 64, 70, 71. 438, 460 

 Foot, 208-211, 213, 217-221, 227, 274, 288, 319, 



362, 366, 382, 383, 390-391, 400, 401, 406, 



413-415, 422. 423. 537, 545 

 Foramen. 82. 190 

 Foraminifera. 82, 513 

 Forebrain. 328 

 Foregut, 438 

 Forest faunas. 484 

 Fossilization, 510 

 Four-o'clocks, inheritance, 535 

 Fovea centralis, 333 

 Fowls, domestic. 111, 403-405. 537 

 Foxes, 413, 506, 509 

 Fragmentation, 105, 168 

 Fraternal twins, 539 

 Fresh-water faunas, 484 



Frog, 113, 334, 359, 366-374, 441. 449. 481, 505 

 Frontal sinus, 329 



