Having seen an account, in Notes of the Geology of the District round Llandudno, by the Rev. W. S. Symonds, that shells had been found by Mr. R. D. Darbishire, F.G.S., in some clay near the New Baths at the Great Orme, it occurred to me that the clay was Boulder-clay, and would probably not be limited to so small a patch, but that it most likely extended far over the hills. And I now propose to give, very briefly, the result of some observations on the subject made during a short stay at Llandudno.