6 Pages in Charles Darwin's Library associated with "geology - slate"

Botanische Mittheilungen
By: Nägeli, Carl,
Publication info: München, F. Staub, 1866
Pages: Page 129 Page 128 Page 180
Principles of geology
By: Lyell, Charles, Sir,
Publication info: London, John Murray, 1837
Volume: v.4
Pages: Page 332 Page 362 Page 377