Cattle: destroying fir-trees, 71. destroyed by flies in La Plata, 72. breeds of, locally extinct, 111. fertility of Indian and European breeds, 254.
Cave, inhabitants of, blind, 137.
Centres of creation, 352.
Cephalopodae, development of, 442.
Cervulus, 253.
Cetacea, teeth and hair, 144.
Ceylon, plants of, 375.
Chalk formation, 322.
Characters: divergence of, 111. sexual, variable, 156. adaptive or analogical, 427.
Charlock, 76,
Checks: to increase, 67. mutual, 71.
Chickens, instinctive tameness of, 216.
Chthamalinae, 288.
Chthamalus, cretacean species of, 304.
Circumstances favourable: to selection of domestic products, 40. to natural selection, 101.
Cirripedes: capable of crossing, 101. carapace aborted, 148. their ovigerous frena, 192. fossil, 304. larvae of, 440.
Classification, 413.
Clift, Mr., on the succession of types, 339.
Climate: effects of, in checking increase of beings, 68. adaptation of, to organisms, 139.
Cobites, intestine of, 190.
Cockroach, 76.
Collections, palaeontological, poor, 287.
Colour: influenced by climate, 132. in relation to attacks by flies, 198.
Columba livia, parent of domestic pigeons, 23.
Colymbetes, 386.
Compensation of growth, 147.
Compositae: outer and inner florets of, 144. male flowers of, 451.
Conclusion, general, 480.
Conditions, slight changes in, favourable to fertility, 267.
Coot, 185.
Coral: islands, seeds drifted to, 360. reefs, indicating movements of earth, 309.
Corn-crake, 185.
Correlation: of growth in domestic productions, 11. of growth, 143, 198.
Cowslip, 49.
Creation, single centres of, 352.
Crinum, 250.
Crosses, reciprocal, 258.
Crossing: of domestic animals, importance in altering breeds, 20. advantages of, 96. unfavourable to selection, 102.
Crustacea of New Zealand, 376.
Crustacean, blind, 137.
Cryptocerus, 238.
Ctenomys, blind, 137.
Cuckoo, instinct of, 216.
Currants, grafts of, 262.
Currents of sea, rate of, 359.
Cuvier: on conditions of existence, 206. on fossil monkeys, 303.
Cuvier, Fred., on instinct, 208.
Dana, Professor: on blind cave-animals, 139. on relations of crustaceans of Japan, 372. on crustaceans of New Zealand, 376.
De Candolle: on struggle for existence, 62. on umbelliferae, 146. on general affinities, 430.
De Candolle, Alph.: on low plants, widely dispersed, 406. on widely-ranging plants being variable, 53. on naturalisation, 115. on winged seeds, 146. on Alpine species suddenly becoming rare, 175. on distribution of plants with large seeds, 360. on vegetation of Australia, 379. on fresh-water plants, 386. on insular plants, 389.
Degradation of coast-rocks, 282.
Denudation: rate of, 285. of oldest rocks, 308.
Development of ancient forms, 336.
Devonian system, 334.
Dianthus, fertility of crosses, 256.
Dirt on feet of birds, 362.
Dispersal: means of, 356. during glacial period, 365.
Distribution: geographical, 346. means of, 356.
Disuse, effects of, under nature, 134.
Divergence of character, 111.
Division, physiological, of labour, 115.
Dogs: hairless, with imperfect teeth, 12. descended from several wild stocks, 18. domestic instincts of, 213. inherited civilisation of, 215. fertility of breeds together, 254. of crosses, 268, proportions of, when young, 444.
Domestication, variation under, 7.
Downing, Mr., on fruit-trees in America, 85.
Downs, North and South, 285.
Dragon-flies, intestines of, 190.
Drift-timber, 360.
Driver-ant, 240.
Drones killed by other bees, 202.
Duck: domestic, wings of, reduced, 11. logger-headed, 182.
Duckweed, 385.
Dugong, affinities of, 414.
Dung-beetles with deficient tarsi, 135.
Dyticus, 386.
Earl, Mr. W., on the Malay Archipelago, 395.
Ears: drooping, in domestic animals, 11. rudimentary, 454.
Earth, seeds in roots of trees, 361.
Eciton, 238.
Economy of organisation, 147.
Edentata: teeth and hair, 144. fossil species of, 339.