4 Pages in Charles Darwin's Library associated with "geology - schist, argillaceous"

Description physique des Îles Canaries, suivie d'une indication des principaux volcans du globe
By: Buch, Leopold von, Freiherr, - Boulanger, C.
Publication info: Paris, F.G. Levrault, 1836
Pages: Page 400 Page 400
Principles of geology
By: Lyell, Charles, Sir,
Publication info: London, John Murray, 1837
Volume: v.4
Pages: Page 298 Page 339