rs and seeds of
--outer and inner florets of
--male flowers of

Conclusion, general

Conditions, slight changes in, favourable to fertility

Convergence of genera

Coot

Cope, Prof., on the acceleration or retardation of the period of
reproduction

Coral-islands, seeds drifted to
--reefs, indicating movements of earth

Corn-crake

Correlated variation in domestic productions

Coryanthes

Creation, single centres of

Crinum

Croll, Mr., on subaerial denudation
--on the age of our oldest formations
--on alternate Glacial periods in the North and South

Crosses, reciprocal

Crossing of domestic animals, importance in altering breeds
--advantages of
--unfavourable to selection

Cruger, Dr., on Coryanthes

Crustacea of New Zealand

Crustacean, blind
air-breathers

Crustaceans, their chelae

Cryptocerus

Ctenomys, blind

Cuckoo, instinct of

Cunningham, Mr., on the flight of the logger-headed duck

Currants, grafts of

Currents of sea, rate of

Cuvier on conditions of existence
--on fossil monkeys

Cuvier, Fred., on instinct

Cyclostoma, resisting salt water

Dana, Prof., on blind cave-animals
--on relations of crustaceans of Japan
--on crustaceans of New Zealand

Dawson, Dr., on eozoon

De Candolle, Aug. Pyr., on struggle for existence
--on umbelliferae
--on general affinities

De Candolle, Alph., on the variability of oaks
--on low plants, widely dispersed
--on widely-ranging plants being variable
--on naturalisation
--on winged seeds
--on Alpine species suddenly becoming rare
--on distribution of plants with large seeds
--on vegetation of Australia
--on fresh-water plants
--on insular plants

Degradation of rocks

Denudation, rate of
--of oldest rocks
--of granite areas

Development of ancient forms

Devonian system

Dianthus, fertility of crosses

Dimorphism in plants

Dirt on feet of birds

Dispersal, means of
--during Glacial period

Distribution, geographical
--means of

Disuse, effect of, under nature

Diversification of means for same general purpose

Division, physiological, of labour

Divergence of character

Dog, resemblance of jaw to that of the Thylacinus

Dogs, hairless, with imperfect teeth
--descended from several wild stocks
--domestic instincts of
--inherited civilisation of
--fertility of breeds tog