Excerpt from Principles of Industrial Engineering The subject matter Of this book is substantially the text of a series of lectures prepared under the auspices of the Department of Mechanical Engineering of Columbia Uni versity, for delivery to senior students. As here presented, it takes the form evolved from three years' experience in the class-room at Columbia, somewhat modified from the manner of the lecture platform, and adapted to meet the needs Of a more general study as discovered by contact with non-technical audiences at Harvard and the New York University, and by many inquiries addressed to the Editorial Department Of The Engineering Magazine. 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 missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.