Sebright, Sir J., on crossed animals, [20].

——, on selection of pigeons, [31].

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

Seedlings destroyed by insects, [67].

Seeds, nutriment in, [77].

——, winged, [146].

——, power of resisting salt-water, [358].

—— in crops and intestines of birds, [361].

—— eaten by fish, [362], [387].

—— in mud, [386].