Practical guide to photographic & photo-mechanical printing (1892)
Burton, W. K. (William Kinnimond), author · London W. : Marion and Co., 22 and 23, Soho Square · leaf 477
its of no direct rays, but causes them to be reflected from the yellow sides and back of the lamp, thus giving an even light all over the surface of the glass. There are two grooves in the front, into which are slid a piece of orange-ruby glass, size 14 X 10, and a sheet of yellow glass, allowing… … a good light from both sides Gives a strong yet safe light from a Paraffin Lamp, through Ruby or Canary No. 4A. Do. Same as above Fabric. Price 6s. A small ditto for night- but of larger size 15s. light, IS. each. MARION & CO., 22 & 23 Soho Square, London, W.
