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: The Macmillan company in 1917 in 522 pages; Description: "This book is the outgrowth of a lecture course given by the authors for several years to undergraduate classes of the Massachusetts institute of technology."--Pref.; Subjects: Science; Biography & Autobiography / Science & Technology; Mathematics / History & Philosophy; Science / General; Science / History; Science / Philosophy & Social Aspects;