Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 156
(It nII i M u I uI it IH11111111111 i i 11 i I i i f I i I fIiIf f i)II … Frcj. l._ll]„„,inatinn of a drawin-rooin with silk sha.Jes(Note bright patches of light on Ihe ceiling above shades.) 144 THE ILLUMINATING ENGINEER. considerably increased had some fonnof shade with good directive power beenused. It is sometimes a good plan insuch cases to use translucent…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
