534 



GENERAL BIOLOGY 



PAGE 



Cover glass 518 



Covering gall 40 



Cow-bird 396 



Cradle 251 



Cranial nerves 190, 463 



Crawfish 355 



Crickets 113, 308 



Crop 166 



Cross-breeding 315 



Cross-fertilization 129 



Cross-pollination 9 



Crossed pyramidal tract . . 466 

 Cross-section elm bough .. 405 



Crustacea 230, 232 



Crystalline lens 513 



Culture stages 499 



Curculionidae 44 



Cutting tools 491 



Cyanide bottle 24, 52 i 



Cynipidae 43. 44, 339 



Cynipid galls 44 



Cynipid larva 45 



Cynthia 312 



Cytoplasm 58 



Cytoplasmof the egg .... 302 



Damselfly 376 



Darwin 266, 277 



Dasyllis 431 



Death rate 327 



Degeneracy 327 



Degeneration 251 



Democracy ; .. 320 



Dendrites 450, 457, 464 



Derivation of tissues 175 



Derived circuits 454 



Dessication 378 



Determinants 301 



Development 148, 170, 290 



De Vries 274 



Differentiation 442 



Differentiation of habitat . 381 



Dinobryon 106 



Diptera 20, 24, 42, 44 



Dipterous gall makers ... 42 



Dissecting 519 



Dissimilation 90, 329 



Distance receptors 455 



Distribution 127, 378 



Divergent development 236,237 



PAGE 



Diving beetles 415,527 



Division of labor 176, 508 



Domestication 51, 499 



Domestication of aphids . 50 

 Dominant characters .... 310 



Dorsal vessel 165 



Dragonfly 410 



Draparnaldia 334 



Drawing 520 



Drepanidas 241 



Dress 506 



Drop Cultures 104, 519 



Duckweed 332 



Dytiscidae 415, 527 



Ear 259, 447 



Earthworm 163, 359 



Ecological differences .... 285 



Economic procedure 7 



Ectoderm 159,171,448 



Ectosarc 71, 105 



Education, 



318, 324,459,490, 511 



Eels 343 



Egg 122, 162, 175, 193, 291 



Elaters 124 



Elder 14 



Elementary species 274 



Elytra 24 



Embryo 130, 151 



Embryology . 175, 255, 258, 260 



Endoderm 159, 160, 171 



Endopodite 232 



End organs 441 



Endryas 426 



Endosarc 105 



Endosperm 151 



Endosperm nuclei 153, 154 



Energy 83, 90 



Enteron 164, 185, 186 



Environment 127, 291 



Epidermis, 



120, 132, 137, 143, 356 



Epistylis 82, 112 



Epitheliuin 172, 197 



Equisetum 136 



Erect attitude 4S6 



Eremochelys odoratus ... 322 



Esophagus 78, 82, 166, 183 



Ethnological classification 491 



