"Bob Jordan" (monkey), *400. Bobwhite, 350. _Bombus_, 216. _Bombyx mori_, anatomy of larva of, *178. _Bonasa umbellus_, 350. Books, reference, 454. Borer, peach-tree, *210. _Botaurus lentiginosus_, 348. Box tortoise, 315. _Brachynotus nudus_, *153. Brains of vertebrates, *378. Branch, defined, 73. _Branta canadensis_, 347. Breeding cage, 458, 459. Brittle-stars, 120, 121, 122. _Bubo virginianus_, 353. Buffalo, 396, *397. _Bufo lentiginosus_, 301; dissection of, 5. Bullfrog, 299. Bumblebee, 216. _Bunodes californica_, 103. _Buteo_, 353. Butterfly, external structure of, 171, *172; life of, 175; monarch, anatomy of larva of, 177; dead leaf, *429; mimicked by viceroy, *433. Butterflies, 205; setting-board for, *466, 467. Buzzard, turkey, 352. Cachalot, 393. Cage, lamp-chimney and flower-pot breeding, *459; soap-box breeding, *458. Cake-urchin, 124. Calcarea, 91. _Calliphora vomitoria_, 202; section through compound eye of, *185. _Callorhinus alascanus_, *399. _Callorhinus ursinus_, parasitized, *422. _Cambarus_ sp., dissection of, 18; life of, 146. _Camphephilus principalis_, 355. _Cancer productus_, *153. _Canis familiaris_, 398. _Canis latrans_, 398. _Canis nubilus_, 398. Canvas-back, 347. _Carcharodon_, 280. Caribou, 396. Cassowary, 343. _Castor canadensis_, 391. Caterpillar, apple tent, 208; forest tent, 209. Catfish, 282. _Cathartes aura_, 352. _Cavia_, 390. Cell, defined, 37. Cell differentiation, degrees of, 54. Cell products, 38. Cell wall, 38. Centiped, *228, 229; skein, *228. Centipeds, 226. _Centrocercus urophasianus_, 350. _Centrurus_ sp., *236. Cephalpoda, 246. _Cercopithicus_, *400. _Cervus canadensis_, *394, 395. _Ceryle alcyon_, 354. Cete, 393. _Cetorhinus_, 270, 280. _Chætura pelagica_, 356. Chain-snake, 320. Chalk, 81. Chameleon, green, 318. Chelonia, 313, 314. _Chelonia mydas_, 315. _Chelydra serpentina_, 314. _Chen hyperborea_, 247. Chicken-hawk, 353. Chimney-swift, 356. Chinch bug, 198. Chipmunk, 391. Chiroptera, 391. Chitin, 145, 158. _Chlorostomum funebrale_, *248. Chordata, 259; classification of, 260. _Chordeiles virginianus_, 356. Chromatophore, 256. Chub, 282. _Chrysemys_, 314. _Cicada_, 199; seventeen-year, *200; _septendecim_, *200, 197. Circulation of blood in mammal, *376. _Circus hudsonius_, 352. _Cistudo carolina_, 314. Clams, 246; hard shell, 247; soft-shell, 247. Class, defined, 73. Classification, basis and signification of, 65; defined, 3; example of, 68. _Clisiocampa americana_, larvæ, *208. _Clisiocampa disstria_, caterpillars, *209; life-history of, 207. _Clupea harengus_, 284. Cobra-da-capello, 324. Coccidæ, 198. Coccyges, 354. _Coccyzus_, 354.