The book may have numerous typos or missing text. It is not illustrated or indexed. However, purchasers can download a free scanned 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.Original Publisher: Folsom, Wells, and Thurston, printers Publication date: 1841Subjects: Zoology; Invertebrates; Mollusks; Crustacea; Annelida; Ctenophora; Nature / Seashells; Science / Life Sciences / Zoology / General; Science / Life Sciences / Zoology / Invertebrates