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Excerpt from An Elementary Treatise on Descriptive Geometry, With a Theory of Shadows and of Perspective: Extracted From the French of G. Monge; To Which Is Added, a Description of the Principles and Practice of Isometrical Projection; The Whole Being Intended as an Introduction to the Application of Descriptive Geometry to Various Branches of the Arts Having been solicited by the Publisher of the Rudimentary Treatises to supply a series of works upon the application of Descriptive Geometry to various branches of the useful arts, it has been deemed advisable to precede them by a treatise on the Elements of Descriptive Geometry itself. This appeared the more necessary from the poverty of our scientific literature in works upon this elegant branch of study, which, from its many and important practical applications, appears to demand a far more prominent place in a system of elementary education than has hitherto been accorded to it in this country. To supply this want we have had recourse to the original work of G. Monge both because, having been the first to reduce it to a system, he must be regarded as the inventor of the art, and because that work was originally intended to occupy the very position here given to it as a prelude to a! series of works upon the application of Descriptive Geometry to the useful arts. A considerable portion of Monge's work does, however, avowedly go beyond this purpose, and, being limited in the extent and price of these treatises, this portion has been altogether omitted. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or miss