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: Moffatt, Yard & Company in 1906 in 226 pages; Subjects: Telegraph, Wireless; Biography & Autobiography / Science & Technology; Science / General; Science / Life Sciences / Biophysics; Science / Physics; Technology & Engineering / Radio; Technology & Engineering / Telecommunications;