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: Murray in 1904 in 387 pages; Subjects: Physical sciences; Physics; Science; Science / General; Science / Astronomy; Science / Astrophysics & Space Science; Science / Chemistry / General; Science / Physics;