INDEX 



455 



Click beetles, 49 



Clitellum, 239, 246 



Clothes moths, 67 



Cochineal, 38 



Cockatoos, 388 



Cockroaches, 19, 101, 164 



Cocoon, 61 



Codling moth, 66 



Ccelenterata, 267, 282, 308 



Ccelom, 255 



Coleoptera, 53 



Collembola, 109 110 



Colloids, 119 



Colonies, 298 



Colorado potato beetle, 50 



Coloration, alluring, 23 ; warning, 48, 



49, 58 

 Columbae, 386 

 Commensalism, 91 

 Commissures, 195 

 Comparative anatomy, 441 

 Compound eyes, 2 

 Conchologists, 213 

 Condyles, 336, 354, 373 

 Conjugation, 294 

 Conservation, 328 

 Contractile vacuole, 290, 294 

 Control of crop pests, 99 

 Copperhead, 359 

 Coracoid, 338, 373 

 Coral, 278 ; islands, 280 ; reefs, 281 

 Coral snake, 359 

 Corn borer, 67 

 Cornfield ant, 33, 90, 91 

 Corn-root aphids, 33, 91 

 Corvidae, 392 

 Cotton boll weevil, 51 

 Cottontail, 422 

 Cottony scales, 36 

 Cow, 418, 420 

 Cowpox, 431 

 Coxopodite, 150 

 Crabs, 160; blue, 162; edible, 162; 



fiddler, 163; hermit, 160; oyster, 



200 ; spider, 162 

 Crane flies, 76 

 Cranes, 383 



Cranium, 316, 336, 373 

 Crayfishes, 145; as food, 156 

 Crickets, 18 ; house, 18 ; mole, 19 

 Crinoidea, 309 

 Crinoids, 231 

 Crocodiles, 354, 364 

 Crocodilia, 364 

 Crop, 6, 239, 370 

 Crop pests, control of, 99 

 Crow, 392 



Crustacea, 166, 168, 309 ; parasitic, 166 

 Crystalline style, 192 

 Crystalloids, 119 



Ctenophora, 308 

 Cuckoos, 399 

 Cuvier, Georges, 444 

 Cyclops, 165 

 Cytoplasm, 130, 291 



Daddy-long-legs, 141 



Damsel flies, 27 



Dana, J. D., on coral reefs, 281 



Darning needles, 24 



Darwin, Charles, on earthworms, 

 249 ; natural selection of, 182, 3 85 ; 

 on the origin of species, 445; pi- 

 geons and natural selection of, 376 ; 

 sexual selection of, 186 



Darwin, Erasmus, 187 



Davenport, C. B., 449 



Death, feigning, 415 



Deer, 418, 433 



Degeneration, 112 



Demospongia, 307 



Devil's darning needles, 24 



Digestion defined, 118 



Dimorphism, 59 ; sexual, 59 ; seasonal, 

 59 



Dinosaurs, 354, 366 



Diplopoda, 309 



Dipnoans, 326 



Diptera, 76 



Disease, insects as cause of, 74, 101 



Diseases : bubonic plague, 104 ; dys- 

 entery, 102 ; sleeping sickness, 71 ; 

 trench fever, 103; typhoid fever, 

 70, 102 ; typhus, 103 ; yellow fever, 

 74, 102, 103 



Disk, 222 



Distribution of insects, 114 



Diving beetles, 47 



Division of cell, 132 ; of nucleus, 131 



Dogs, 423 ; domestic, 424 



Dolphins, 416 



Dominant, 177 



Dorsal, 4 



Dorsal vessel, 8 



Doves, 386; mourning, 386; turtle, 

 386; wild, 386 



Dragon flies, 24 



Drill, oyster, 212 



Drones, 83 



Drosophila, 179 



Drum, 30 



Duckbill, 412 



Ducks, 382; canvasback, 382 ; domes- 

 tic, 382 ; mallard, 382 



Dysentery, 102 



Eagles, 387 

 Earthworm, 238 

 Echinoderma, 221, 237, 308 

 Echinoidea, 309 



