Percy Verance

Perpetual Motion Percy Verance 1st edition

Comprising a history of the efforts to attain self-motive mechanism with a classified, ILLUSTRATED collection and explanation of the devices whereby it has been sought and why they failed, and comprising also a revision and re-arrangement of the information afforded by "Search for self-motive power during the 17th, 18th and 19th centuries," London, 1861, and "A history of the search for self-motive power from the 13th to the 19th century," London, 1870, by Henry Dircks, C. E., LL. D., etc.