This is an OCR edition without illustrations or index. It may have numerous typos or missing text. However, purchasers can download a free scanned copy of the original rare book from GeneralBooksClub.com. You can also preview excerpts from the book there. Purchasers are also entitled to a free trial membership in the General Books Club where they can select from more than a million books without charge. Volume: 17; Original Published by: A. and C. Black in 1863 in 365 pages; Subjects: Science; Art / General; Philosophy / General; Science / General; Science / Earth Sciences / General; Science / Earth Sciences / Geology; Science / Philosophy & Social Aspects;