320 
Barrier, mountains a, to distribu- 
tion, 293; sea a, to distribution, 
288; temperature a, to distribu- 
tion, 290. 
Barriers affecting fresh-water ani- 
mals, 294; effect of, 283; species 
debarred by, 274; to distribu- 
tion, character of, 288. 
Basilarchia archippus mimicking 
Anosia plexippus (illus.), 219. 
Bassalian fauna, 305. 
Beavers, nest of (illus.), 269. 
Beetle, larva of (illus.), 146. 
Beetles, lady-bird (illus.), 214, 
Bird, egg of (illus.), 79. 
Bird-louse (illus.), 188. 
Bird of paradise (illus.), 58. 
Birds, nest-making habits of, 264. 
Birth, 78. 
Bittern, cestlings of (illus.), 246, 
247. 
Blastoderm, 82. 
Blastula, 82. 
Blue jay (illus.), 188. 
Brain, 241. 
Budding, 13. 
Bumble-bee, 159, (illus.), 161. 
Bush-tit, nest of California (illus.), 
270. 
Butterfly, egg of (illus.), 79; mon- 
arch, metamorphosis of (illus.), 
92. 
Cecum, 68, 
Caleolynthus porimigenius (illus.), 
33. 
Calf, taste buds of (illus.), 229. 
Callorhinus alascanus  (illus.), 
136. 
Camponotus (illus.), 155. 
Canadian skipper butterfly, distri- 
bution of (illus,), 273. 
ANIMAL LIFE 
Canal, alimentary, 66. 
Cankerworm-moth (illus.), 59. 
Care of young of mammals, 268. 
Carpenter-bee, nest of (illus.), 160. 
Caterpillar parasitized (illus.), 189, 
(illus.), 190. 
Cave blind-fish (illus.), 282. 
Ceanothus (illus.), 141. 
Cell, animal, 2; egg, 21,56; plant, 
2; products, 3; wall, 3. 
Cells, brood, of honey-bee (illus.), 
152; nerve, 240; reproductive, 
29, 55. 
Cellulose, 24, 27. 
Centiped (illus.), 180. 
Cerura, larva of (illus.), 216. 
Chalk, 18. 
Chick, embryonic stages of (illus.), 
87. 
Chitin, 91. 
Chlorophyll, 24. 
Chologaster agasstzt (illus.), 282. 
Chologaster avetus (illus.), 282. 
Chromatophore, 24. 
Chromosome, 3. 
Chrysalid of butterfly, showing 
protective resemblance (illus.), 
206. 
Chrysalis, 93. 
Chyle, 68. 
Cilia, 9. 
Cleavage, 82. 
Climate, influencing distribution, 
291; instincts of, 248. 
Clouded skipper butterfly, distri- 
bution of (illus), 273. 
Coccidium oviforme (illus.), 14. 
Cockroach, alimentary canal of 
(illus.), 73; egg case of (illus.), 
140. 
Cocoon of Cecropia moth (illus.), 
141, 
