Paris: Gauthier-Villars, Imprimeur-Libraire, 1908. Second edition, revised and enlarged. Plain wrapper. Item #45433
Signed by Lévy-Lambert on the frontis page. Like a conventional railroad, a cog, or rack, railway consists of two parallel steel rails, completed by a third toothed rail, placed between the smooth rails, and intended to ensure better adhesion. Chapters on the various types of geared systems, rolling stock, electric traction, operations, etc.. 479 pages with diagrams, illustrations, maps of various cog railways, elevations, tables, errata page, bibliography and index. Pages untrimmed. Bound in original plain paper cover. A very good plus copy.