This paper commenced with an account of Ancient Moraines connected with Corries or Small Valleys. Sir Charles Lyell had described one as forming the retaining dam of Loch Brandy, on the eastern skirts of the Grampians, and Mr Charles Maclaren had discovered another in Glenmessan, near the Firth of Clyde. The author of the paper described a few others which he had discovered. At Corryhashtel, on the side of Ben-Blaven, in the Isle of Skye, there are three distinct parallel lines of blocks along the right side of the valley, which are presumed to mark the right skirt of a local glacier at three points in the history of its shrinking. In a deep rough valley at the opposite side of the mountain, there are several mounds of rough stones mingled with smaller detritus, which are presumed to have been the terminal moraines of a glacier once filling that valley.