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. Original Published by: American philosophical society in 1905 in 40 pages; Subjects: Science / Life Sciences / Anatomy & Physiology; Nature / Birds & Birdwatching; Medical / Veterinary Medicine / General; Nature / Birds & Birdwatching;