INDEX. 



Fission - - - - 41 

 Fissipedia - - - . ^81 

 Flagella - - - - 15 

 Flagellum of snail - - 268 

 Flame-cell excretory organs 139 

 Fleas ----- 253 

 Flies - - - - - 251 

 Flight-feathers - - 361 

 Flying lemur - - - 585 

 Foetal membranes of birds - 381 

 II II of Mammals 478 

 M II of Vertebrata 428 

 FoUicle cells - - - 476 

 Follicle, Graafian - - 476 

 Foot of Anodonta - - 274 

 II of Cephalopoda - - 284 

 II of Gasteropoda - - 283 

 II of Mollusca - - 282 

 Foramen of Munro - - 406 

 II triosseum - - 373 

 Foraminifera - - - 100 

 Fossils - - - - 67 

 Fossorial adaptation in mam- 

 mals - . - - 541 

 Fox ----- 583 

 Fox-bat - - - - 551 

 Freshwater mussel - - 269 



Frog 338 



Frontals - - - - 416 



Functions, change of - - 27 



II of Animals - - 14 



Gibbon - - - - 590 



Gill-slits - . - - 425 



Gills {see Respiratory system) 1 8 



Giraffe - - - - 578 



Gizzard of cockroach - - 226 



II of earthworm - 201 



II of pigeon - - 363 



Globigerina - - - 60 



Glochidium of Anodonta - 275 



Glossina - - - 250 



Glossopharyngeal nerve - 480 



Gnats . - . . 252 



Goat - - - - 578 

 Gonads ^ Reproductive 



organs - - - - 21 



Gorilla . . . . ^go 



Graafian follicle - - - 476 



Grantia - - - - 104 



Grasshopper - - - 256 



Green gland - - - 219 



Gregarina - - - - 94 



Guanaco - - - - 5 76 



Gymnoloemata - - - 1 77 



Gymnomyxa - - - 98 



Gymnophiona - - - 440 



Haddock - - - - 331 

 Haemal nutrition of Verte- 

 brata - - . - 429 

 Hgemocoele - - - 26 

 Flaemoglobin of blood 201, 186 



Hag 309 



Hair .... 454 



Halicore .... 562 



Haliotis ... - 284 



Halitherium - - - 562 



Hapale .... 580 



Hapalidre - - - 590 



Hare . . . . ^64 



Harvestmen - - - 260 



Hatteria (Sphenodon) - 441 



Heart of Vertebrata - - 421 



Hedgehog - - - 585 



Heliozoa - - - - 99 



Helix .... 262 



Plemichorda (archichorda) 171 . 



Hemiptera - - - - 257 



Heredity - - - - 80 



Hermaphroditism - - 44 



Hesperornis - - - 452 



