ITS INFLUENCE UPON CIVILIZATION
BY
M. LUCKIESH
DIRECTOR OF APPLIED SCIENCE. NELA RESEARCH LABORATORY, NATIONAL LAMP WORKS OF GENERAL ELECTRIC COMPANY
Author of "Color and Its Applications," "Light and Shade and Their Applications," "The Lighting Art," "The Language of Color," etc.
ILLUSTRATED WITH PHOTOGRAPHS
NEW YORK
THE CENTURY CO.
1920
Copyright, 1920, by
The Century Co.