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. Publication date: 1817; Subjects: ScienceLife on other planets; Plurality of worlds; Life on other planets; Technology; Plurality of worlds; Science / History; Science / Astronomy; Science / Life Sciences / Evolution; Body, Mind