From the sandstone (i), which Professor Ansted asserts, though without giving his reasons, to be “no doubt modern,” and to have been “deposited before” [just before?] “or during the last great elevation,” down to the superficial clays and sands, there is not a scrap of any other Secondary or Tertiary rock in situ to be found on any of these islands. We leap at once from this sandstone to clays and sands of Post-Tertiary date. Mr. Duncan, in his History of Guernsey (edit. 1841, p. 513), says that “flint and chert nodules, containing impressions of shells, etc., are frequently discovered beneath the soil in places which preclude the probable transport by the hand of man.”