Skertchley, Mr., on four distinct boulder-clays, [118]

on Tertiary deposits in Egypt and Nubia, [191]

on climatic stability of present epoch, [233]

Slug peculiar to Ireland, [356]

Snake peculiar to Round Island, [438]

Snakes of the Galapagos, [280]

of the Seychelles, [431]

Snow and ice, properties of, in relation to climate, [131]

Snow, effects of, on climate, [133]

Snow, quantity of heat required to melt, [134]