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: Henry Holt and company in 1900 in 365 pages; Subjects: Physiology; Metabolism; Metabolism (Physiology); History / General; Medical / Endocrinology & Metabolism; Medical / Neuroscience; Medical / Physiology; Science / Life Sciences / Biochemistry; Science / Life Sciences / Human Anatomy & Physiology; Science / Life Sciences / Anatomy & Physiology;