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: 1; Original Published by: Printed for the Museum in 1912 in 260310 pages; Subjects: Sea urchins; Echinodermata; Nature / Marine Life; Science / Life Sciences / Biology / Marine Biology; Science / Life Sciences / Zoology / General;