The book may have numerous typos or missing text. It is not illustrated or indexed. However, purchasers can download a free copy of the original rare book from the publisher's website. You can also preview the book there.Purchasers are also entitled to a trial membership in the publisher's book club where they can select from more than a million books for free.Publisher: Published by authority of the Legislature of Michigan under the direction of the Board of Geological Survey Publication date: 1876Subjects: Geology; Mines and mineral resources; Nature / Fossils; Science / Earth Sciences / General; Science / Earth Sciences / Geology; Science / Paleontology; Technology