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.

Original packaging marks this bundle as 'H; '4' C. Lyell's notes with G. Hartung Oct 1855, Nov. and with large letters 'CL'. Text includes notes, queries, itinerary of trip, reference to Notebook 185, in sections by topic e.g. Dikes, with sketches and diagrams throughout. October-November 1855.