This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...society, etc. The Illuminating En gineering Society brought all of these A historical a, ddress given at the mid-winter convention of the Illuminating Engineenng 5"lt-Y, New York, February 10, Ti, 1916. The Illuminating Engineering Society is not responsible for the ltatvmfllu " vanced by contributors. elements together; the physicist, the physiologist, the psychologist, the electrical engineer, the gas engineer, the architect, the fixture designer, the manufacturer, the school superintendent, etc. Not only have all of these been represented in the membership of the Society and its committees, but in the management as well, ---a plan which has yielded results that would have been impossible without such co-operation. The subject of lighting was discussed from all points of view, ----hygienic, economic, esthetic--in technical papers presented by individuals, committee reports and discussions at meetings; thus giving to the world a comprehensive treatment of the science and art from every standpoint, so that in ten years we have gathered in the printed TRANSACTIONS of the Society, volumes aggregating 8,000 pages, constituting the most ' complete reference library on illumination to be found anywhere. Before the Society was organized, lighting was largely a matter of guessing. Now it is a matter of science, and the rule of thumb that existed before has given way to definite calculations which may be depended upon to ensure the same lighting result in all cases under stated conditions. This does not mean that the Society has been interested only in the scientific side of th6 question. On the contrary it has laid great stress on the esthetic side and has recognized the general principle that science and art should go hand in...