On the Origin of Species by Means of Natural Selection / or the Preservation of Favoured Races in the Struggle for Life. (2nd edition)

by Charles Darwin

——, sterility of, [251].

Pelvis of women, [144].

Peloria, [145].

Period, glacial, [365].

Petrels, habits of, [184].

Phasianus, fertility of hybrids, [253].

Pheasant, young, wild, [216].

Philippi on tertiary species in Sicily, [312].

Pictet, Prof., on groups of species suddenly appearing, [302], [305].

——, on rate of organic change, [313].