Selection, injurious forms of, in civilised nations.
Selection of male by female birds.
Selection, methodical, of Prussian grenadiers.
Selection, sexual, explanation of; influence of, on the colouring of Lepidoptera.
Selection, sexual and natural, contrasted.
Self-command, habit of, inherited; estimation of.
Self-consciousness, in animals.
Self-preservation, instinct of.
Self-sacrifice, by savages; estimation of.
Semilunar fold.