Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 453
and fat in the past ages.Fig. 3 is said to be a reproduction of the show the beginning of illuminatingengineering. It consists of a wooden base,having mounted on it a porcelain plateto serve as a screen. (Even the oil lampsof that day, it will be noted, were felt torequire screening !) The…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
