326 



CORAL-ISLAiros. 



INDEX. 



DOTTBLE. 



Coral-islands, seeds drifted to, 

 ii. 145. 



reefs, indicating movements 



of eai th, ii. 145. 



Corn-crake, i. 223. 



Correlated variation in domestic 

 productions, i. 13. 



Coryanthes, i. 241. 



Creation, single centres of, ii 135. 



Crinum. ii. 6. 



Crull, Mr., on subaerial denuda- 

 tion, ii. 53, 5G. 



, on tlie age of our oldest for- 

 mations, ii. 83. 



, on alternate Glacial periods 



in tlie North and South, ii. 160. 



Cro.sse.s, reciprocal, ii. 14. 



Crossing of domestic animals, im- 

 portance in altering breeds, i. 23. 



, advantages of, i. 119, 120. 



, \infavourable to selection, 



1. 125. 



Criiger, Dr., on Coryanthes, i. 241. 



Crustacea of New Zealand, ii. 164. 



Crustacean, blind, i. 171. 



air-breathers, i. 238. 



Crustaceans, their chelae, 1. 300. 



Cryptocerus, i. 359. 



Ctenorays, blind, i. 170. 



Cuckoo," instinct of, i. 319, 330. 



Cunningham, Mr., on the fiidit of 

 the logger-headed duck, i. 167. 



Currants, grafts of, ii. 19. 



Currents of sea, rate of, ii. 144. 



Cuvier, on conditions of existence, 

 i. 320. 



Cuvier, on fossil monkeys, ii. 79. 



, Fi-ed., on instinct, i. 320. 



Cyclo.-toma, resisting salt water, 

 ii. 187. 



D. 



Dana, Prof., on blind cave-animals, 



i. 172. 

 , on relations of crustaceans of 



Japan, ii. 158. 

 -, on crustaceans of New Zea- 



land, ii. 164. 

 Daw>on, Dr., on eozonn, ii. 85. 

 Dp CandoUe, Aug. Pyr., on struggle 



for existence, i. 77. 



• , on umbrllir rx, i. 181. 



, on general affinities, ii. 228. 



De Candolle, Alph., on the varia- 

 bility of oaks, i. 62. 

 , on low plants, widely dis- 

 persed, ii. 196. 

 , on widely-ranging plants 



being variable, i. 67. 



, on naturalisation, i. 139. 



, on winged seeds, i. 181. 



, on Alpine species suddenly 



becoming rare, i. 210. 

 , on distribution of plants with 



large seeds, ii. 145. 

 , on Vegetation of Australia, 



ii. 167. 



, on fresh-water plants, ii. 174. 



, on insular plants, ii. 178. 



Degradation of rocks, ii. 52. 

 Denudation, rate of, ii. 54. 



of oldest roeks, ii. 85. 



of granitic areas, ii. 64. 



Development of ancient forms, 



ii. 116. 

 Devonian system, ii. 113. 

 Diauthus, fertility of crosses, ii. 



13. 

 Dimorphism in plants, i. 55 ; ii. 29. 

 Dirt on feet of birds, ii. 148. 

 Dispersal, means of, ii. 140. 



during Glacial period, ii. 151. 



Distribution, geograpical, ii. 129. 



, means of, ii. 140. 



Disuse, effect of, under nature, 



i. 167. 

 Divergence of character, i. 134. 

 Diversitieation of means for same 



gineral jmipose, i. 240. 

 Dlvi^ion, physiological, of labour, 



i. 139. 

 Dog, re-^omblance of jaw to that of 



the Tiiylaciuus. ii. i!20. 

 Dugs, bauiess, with imperfect teeth, 



i. 14. 

 descended from several wild 



stocks, i. 22. 



, domestic instincts of, i. 327. 



, ini.erited civilisation of, i. 327. 



, fertility of breeds together, 



ii. 10. 



of crosses, ii. 35. 



, proportions of hotly in diff. r- 



ent breeds, when young, ii. 247. 

 Domestication, variation under, i.7. 

 Double flowers, i. 358. 



