dying out and replacement of, [409]
preservation of, in islands, [410]
Specific areas, [14]; discontinuous, [64]
Spiranthes romanzoviana, [364]
Spitzbergen, Miocene flora of, [184]
absence of boulder-beds in, [187]
Spruce, Dr. Richard, on the dispersion of hepaticæ, [309]
Stability of extreme glacial conditions, [159]
Stainton, Mr. H. T., on peculiar British moths, [346]-[350]
Stanivoi mountains, why not ice-clad, [154]