BABBITT, Edwin D. The Principles of Light and Colour. New York: Babbitt & Co., 1878. 4to. 4 colour plates, illustrated throughout (minor tear to plate 1, occasional spotting). Original green, illustrated cloth, with titles in gilt (new endpapers, recased preserving 99% of old material, new casing showing at head and tail of spine, cloth worn with one or two nicks, corners bumped with some loss to material). FIRST EDITION.