The book has no 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 the publisher's website (GeneralBooksClub.com). You can also preview excerpts of 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: 7; Original Publisher: Board of Commissioners for the Second Geological Survey; Publication date: 1884; Subjects: Geology; Coal; Science / Earth Sciences / General; Science / Earth Sciences / Geology; Technology