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: 296; Original Published by: The Carnegie institution of Washington in 1920 in 122 pages; Subjects: Heredity, Human; Eugenics; Heredity; Medical / Genetics; Science / Life Sciences / Genetics & Genomics; Science / Life Sciences / General; Social Science / Discrimination & Race Relations;