. Nat. Biog." 1857; article by Dr. Norman Moore.)
-on Glen Roy.

Clarke, W.B., "Wreck of the 'Favourite.'"

Clarkia, two kinds of stamens.
-C. elegans.

Classification, Bentham on.
-Cuvier on.
-Dana on mammalian.
-Darwin on.
-Darwin and Huxley on.
-genealogy and.
-value of reproductive organs in.

Clay-slate, metamorphism of.

Cleavage and foliation.
-Darwin on his work on.
-history of work on.
-parallelism of foliation and.
-relation to stratification.
-relation to rock-curves.
-Rogers on.
-Sedgwick on.
-uniformity of foliation and.
-result of chemical action.
-metamorphic schists.
-lines of incipient tearing form planes of.
-Tyndall on Sorby's observations.

Cleistogamic flowers, fertilisation.
-of grass.
-of Oxalis and Viola.
-pollen of.
-comparison with Termites.

Clematis, Darwin's error in work on.
-Darwin's experiments on.
-irritability.

Clematis glandulosa, identified at Down by power of feeling.

Cleodora, specific differences in.

Clethra, absence in Azores.
-remnant of Tertiary Flora.

Clianthus.

Clift, William (1775-1849): Conservator of the Museum of the Royal College
of Surgeons.
-on fossil bones from Australia.
-Owen assistant to.

Climate, changes in.
-effect on species.
-effect on species of birds.
-migration of organisms and change in.
-relation to distribution and structure of plants.
-extinct mammals as evidence of change in.
-and sexual differentiation.
-variation and.
-Lyell on former.
-mild Miocene.

Climbing Plants, Darwin's work on.
-circumnutation of.
-F. Muller's work on.

Clivia, Scott's work on.

Clodd's memoir of Bates.

Close species, absence of intermediate forms between.
-definition of.
-Asa Gray on.
-in warm temperate lands of N. and S. hemispheres.
-relation to flora of N. America.

Clover, relation between bees and.

Club, dinner at Linnean.
-Philosophical.

Coal, Darwin on origin of.
-Lesquereux on the flora of.
-marine marshes and plants of.
-ash of.

Coal period, higher percentage of CO2 during.

Coast-lines, parallelism with lines of volcanoes.

Cobbe, Miss, article in "Theological Review" on "Descent of Man."

Cockburn Island, boulders from.

Cochin hen, experiments on.

Coelogyne, fertilisation mechanism.

Coffea arabica, seeds with two embryos.

Cohn, F., notice in "Cornhill" of his botanical work.

Coldstream, Dr.

Colenso, on