Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 229
he additions of the vola-tile hy(_lro(ar])()ns contained in thenaphtha ; the illuminating ])ower of thegas being increased from 25 to 77 per 214 THE ILLUMINATING ENGINEER. cent, according to tlie qualitv of fh naphtha The inventors dahned that *° ^l^ Corporation of London, in con equal hght would…
Lighting
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