The Cruise of the Betsey - or, A Summer Ramble Among the Fossiliferous Deposits of the Hebrides. With Rambles of a Geologist or, Ten Thousand Miles Over the Fossiliferous Deposits of Scotland English 2869h 52m read
The Testimony of the Rocks - or, Geology in Its Bearings on the Two Theologies, Natural and Revealed English 2654h 35m read