392 



INDEX 



cross fertilization, 367-369 

 Crustacea, 18, 84-97, 337 

 crystalline lens, 307 

 Ctenophores, 139 

 cuckoos, 198 

 curculios, 55 

 cuticle, 283 

 cutis, 283 

 cuttle fish, 1 06 

 Cyclostomes, 156, 157 

 Cynipidae, 69 

 cysticercoid, 127 

 cysticercus, 127 

 cysts, 144, 147 



D 



damsel flies, 70, 72 

 Daphnia, 97 



Darwin, C., on cross and self- 

 fertilization, 367 



on earthworms, 119 



on natural selection, 358, 360 



on sexral selection, 195, 196 



on species, 17, 342 

 Davenport, C. B., 380 

 deafness, 377 

 Decapoda, 93 

 deer, 220-222 

 degeneration, 96, 365, 366 

 Demodex, 83 

 dentine, 248 

 devil-fish, 98, 107 

 dextrose, 251, 234, 266 

 diaphragm, 274 

 digestion, in Amoeba, 147 



in birds, 187, 188 . , 



in crayfish, 87 



in grasshopper, 7 



in Hydra, 131 



in man, 245-251 



in Paramcecium, 142 



in starfish, 109, no 

 diphtheria, 326 



Dipnoi, or lung fishes, 160, 167, 



1 68 



Diptera, 18, 40-50 

 disinfectants, 320 

 Dissosteira, 18 

 dobson, or hellgrammite, 74 

 dogfish, 161, 166, 167 

 dogs, 210, 223, 358, 359 

 dorsal fins, 158 

 dorsal vessel, 117 

 dragon flies, 70-72 

 drones, 56, 60 

 drum membrane, 309 

 duck bills, 211, 212 

 ductless glands, 280-282 

 Dytiscidae, 55 



ear, 309, 344 



earthworms, 114-120, 276, 334 



Echidna, 212 



Echinococcus, 129 



Echinoderms, 108-113 



Echinoids, 110-113 



ectoderm, 131, 139, 336 



ectoplasm, 147 



Edentata, 214, 215 



eels, 163, 167 



eggs, 233-236 



care of, 337~34o 



of amphibians, 170, 171 



of ants, 67 



of birds, 188, 189, 191, 192, 

 198, 206 



of bot-fly, 43 



of butterfly, 21 



of clam, 101 



of cockroach, 15 



of crocodiles, 181 



of crustaceans, 85, 90, 96 



of dragon flies, 70 



of earthworm, 118, 119 



of fishes, 160, 238, 239, 

 161, 163, 164, 166 



