«. Caterpillars, 
318 
seallop’s and the vertebrate’s 
eye, 257-258. 
quoted, 230, 290. 
Bernard, Claude, his work on the 
phenomena of life, 178-179, 
180. 
Biology, of spring, 151. 
of twins, 158-165. 
Bipedal progression, 287-288. 
Blackburn, Mrs., accuracy of her 
drawing of young cuckoo clear- 
ing nest by force, 46. 
Blegvad, Dr., on detritus-eating 
creatures, 86, 
Bonhote, J. Lewis, his breeding ex- 
periments, 265-266. 
on vigor and heredity, 264, 266- 
269. 
Boulenger, Dr., quoted, on frogs, 
47- 
Brachet, Professor, his lectures on 
the egg, 134, 136, 138. 
Brandt, Professor, on Plankton in 
polar and tropical seas, 85-86. 
Branford, Benchara, quoted, 299. 
Brer Rabbit’s policy, 128. 
Bullen, G. E., his demonstration as 
to the correspondence between 
the catches of mackerel and the 
amount of Copepod plankton, 
80. 
Burroughs, John, quoted, 218-219, 
262. 
Burton, Robert, quoted, 313. 
Butler, Samuel, quoted, 25, 223. 
Cesar, the motive of his expedition 
into Britain, 67. 
Cairngorms, their slopes in winter, 
127, 129, 132. 
Procession, 
stinct limited, 210. 
Cave blindness, the problem of, 
246-253. 
their in- 
= Cerambyx beetle, grub of, 208-209. 
Chamberlin, Professor, on the ori- 
INDEX 
gin of life on the earth, 214, 
217, 218, 
Chambers, Robert, on the embryo, 
148. 
Change, the fountain of, 238-245. 
the problem of what brings it 
about, 238-239. 
Characteristic sounds of particular 
places, 108-109. 
Cheerfulness. See Joy. 
Child, Professor W. M., on senes- 
cence and rejuvenescence, 151, 
153-157. 
Chimpanzee, restless habits of, 195. 
Chlamydosaurus, 287. 
Chromosomes, number of, 136, 137, 
138, 242-243, 244. 
Claparéde, 285. 
Cod, journeyings of, 196. 
Convergence in evolution, 254-262, 
of Australasian animals, 256-257. 
three suggestions with regard to, 
259-261. 
Copepod plankton, 80, 81, 84, 87. 
Correns, 232. 
Country sounds, 104-110. 
Cowrie shells and symbolism, 64, 
68-70. 
Crab, common, journeyings of, 196. 
Crime. See Sequel to ‘“ The 
Jukes.” 
Crustaceans, autotomy in, 170-172. 
freshwater, their survival of 
drought, 176. 
Cuckoo puzzles, 39-46. 
Cuckoos, resentful attitude of 
hedge-sparrow and little birds 
to, 40-41. 
resemblance of eggs to selected 
foster-parent, 44. 
securing success for their off- 
spring, 272. 
smaliness of their eggs, 44. 
their abundance in 1916, 39. 
their calls, 39-40. 
their evasion of brooding, 41-43. 
