IV.—On the Creeping of the Soilcap through the Action of Frost

Abstract

1. The object of this paper is to show how the soilcap, or its upper portion, may creep down an inclined surface through the action of frost. The subject has also been discussed by Mr. W. C. Kerr in a valuable memoir, “On the action of frost in the arrangement of superficial earthy material,” published in May, 1881. I reproduce here one of the figures given by Mr. Kerr, as I cannot better describe the nature of the phenomenon which it is the aim of this paper to consider.