5 Pages in Charles Darwin's Library associated with "geology - mud"

A history of British fossil mammals and birds
By: Owen, Richard,
Publication info: London, John Van Voorst, 1846
Pages: Page 197
Principles of geology
By: Lyell, Charles, Sir,
Publication info: London, John Murray, 1837
Volume: v.3
Pages: Page 270 Page 270 Page 290 Page 290