Handwritten article on the geology of Grande [sic Gran] Canaria and the way in which the rocks were formed. Seeming to be a summary of Lyell's observations while on the island, 1855 - it is not in his handwriting, and is perhaps written by Mary Lyell, or Georg Hartung.

Notes - including sketches - of a visit to the Canary Isles and Madeira with Georg Hartung, to look at the geological formations caused by volcanoes on the islands. TNotes on trip to Lanzarote and Fuerteventura with James Tennant to look at minerals. Index of notes on Madeira & the Canaries with G. Hartung. May-June 1855 - also refers to page numbers in Notebook 203.