INDEX 



463 



Exconjugant, 245 



Excretion, 16; in animals, 43, 

 175-180 



Excretory system, 116; evolu- 

 tion of, 179, 365 



Exopodite, 132 



Exoskeleton, 140, 146 



Experimental biology, 252 



External receptor, 193 



Extracted dominant, 274 



Extracted recessive, 274 



Eye, of Arthropod, 199; of Cuttle- 

 fish, 199; development of, 200; 

 human, diagram of, 201 ; Inver- 

 tebrate, 199; optic stalk, 199; 

 origin of, 198-200', rods and 

 cones, 201; Vertebrates vs. In- 

 vertebrates, 200 



Fabricius, 401 



Factors, multiple, 286 



Faeces, 156, 175 



Fallopian tubes, 205 (see Oviduct) 



Fats, 13, 14, 42, 157, 158 



Fat body, 149 



Feather, 138 



Fermentation, 47; alcoholic, 310 



Ferns, classification of, 414; fer- 

 tilization in, 240; life history, 

 103, 104, 107 



Fertilization, 34, 113, 114, 214, 

 231, 235, 237-242, 245, 249-251; 

 Protista, 243-248; significance 

 of, 242-251 



Fibrous root, 65 



Fibula, 144 



Fig, 67 



Filial regression, law of, 270, 301, 

 303 



Fins, 138, 141 



Fish, 117, 136; brain, 189; circu- 

 lation, 164, 165, 171; classifi- 



cation, 117, 135, 416; dissec- 

 tion of, 148; embryo, 366; res- 

 piratory current, 170; skeleton, 

 141 



Fission, binary, 212; multiple, 212 



Fixity of species, 346 



Flagellum, 33 



Flatworm, 414; fission, 217; re- 

 generation, 288 



Flax, 110 



Flexures, cranial, 188 



Floral parts, 75, 107, 108 



Flower, 107, 112; staminate, 355; 

 vertical section, 110 



Flowering plants, 61, 105; classi- 

 fication, 414; life history, 

 107-114; physiology, 84-90; 

 structure, 65-84 



Fluctuations, 300, 302 



'Flying Lemur/ 318 



Foetal membranes, 205 



Food, 157, 158, 308-311; of ani- 

 mal and green plant contrasted, 

 42; stuffs, 14, 42; utilization, 

 Flowering Plants, 89, 90 



Fore-brain, 186, 187, 188, 189 



Four-o'clock, 283, 284 



Fovea centralis, 201 



Fragmentation, 113 



Frequency curve, 299-305 



Frog, brain, 189; circulation, 165; 

 dissection of, 149; section of in- 

 testine, 59 (see Amphibian) 



Frond, 39, 103, 104 



Fructose, 13, 36 



Fruit, 66, 110, 112 



Fucus, 62 



Fungi, classification of, 413 (see 

 Bacteria) 



G 



Galen, 382, 394, 396 

 Galeopithecus, 318 



