492 



Index 



Engelman, 63 



English sparrow, 411 ; introduc- 

 tion, spread, 385 

 Entelechy, 189, 234, 283 

 Entomology, see U. S. Bureau 

 Environment, influence on develop- 

 ment, 220; ill. 221 

 relation to variation, 244 et seq. 

 Enzymes, 295, 480 

 constructive, 29B 

 digestive, 299 

 oxydizing, 296, 333 

 see Drosera 



Eocene epoch, climate, 140 

 earth changes, 140 

 life, 138*, 142-5 

 Eohippus, 40, 144 

 Epilepsy, 270-1 



Epoch, see Eocene, Miocene, Plio- 

 cene, Pleistocene 

 Equatorial plate, see Mitosis 

 Era, see Mesozoic, Palaeozoic 

 Estheria, egg, 382 

 Eucrangonyx gracilis, effect of 



light, 226-7 

 Eugenics, 268 et seq. 

 Laboratory, 269, 274 

 Eecord Office, 74-5, 274 

 Eustachian tube, see Vertebrates, 



structure 

 Evening primrose, influence of 



radium, 248; see Mutation 

 Everglades, see Florida 

 Evolution, 234 et seq. 

 blood vessels, 89 

 factors, 478 

 invertebrates, 103-7 

 land from water vertebrates, 



124-5 

 relation of morphology and 



physiology to, 89 

 vertebrates, 106 et seq. 

 see Darwin 



Existence, see Struggle 

 Extinction, see Reptiles 

 Extra fingers, see Man, polydactyl- 



ism 



Eye, control of color, 333; devel- 

 opment, 193 



Factors, see Inheritance, Mendel- 



ian 



Fairchild, 413 



Fairport Biological Station, 436-7 

 Fat, digestion, 295-6 



Fat, energy production, 294-6 

 reserve, 296 



see Diet, food changes 

 ' ' Fauna boreali-Americana, ' ' see 



Eichardson 

 Feather, contour, down and hair, 



see Birds 



Feathers, importation, see Plum- 

 age 



Feeble-mindedness, 270-1 

 Feeble-minded, see Training School 

 Fer de lance, 404 

 Ferment, see Enzyme 

 Ferns, horsetail, 122 

 reproduction, 99-100 

 spermatozoa, chemical attrac- 

 tion, 327 



Fertility, see Eat inbreeding 

 Fertilization, artificial, 328-9 

 mechanics of, 328 

 see Cross, Protozoa, Salmon, 



Volvox, Winter eggs 

 Fever, see Puerperal 

 Fins, see Fish 

 Finlay, 450 

 Fir, see Balsam 

 Fish, anadromus, 361 

 ancestral, 111 

 commissions, state, 425; see 



U. S. 



coral reef, 340, 348; ill 339 

 culture, 425; see American 

 cyclopean, production, 227 

 death in overflow ponds, 118, 



119, 437 



deep sea, 354-7; ill. 354-6 

 development, 430-1 

 gills, 111 



hatcheries, see Fish culture 

 migration, 360-3 

 monsters, production, 227; ill. 



228 



paired fins, 111-2 

 resistance to temperature, 382 

 scales, 120 



sex-linked inheritance, 214 

 spiracle, 111 

 survival in ice, 381 

 see Adaptation, Dean, Eigen- 

 mann, Germ cells, In- 

 stincts, Jordan, Origin, 

 Plankton 



"Fish Hawk," 350 

 Fisher, distribution, 174 

 Fisher, 287 



Fisheries, see U. S. Bureau 

 Fitzhughs, inheritance, 273 

 Fixity of Species, belief, 45 



