Photography
Photography, a textbook by William de Wiveleslie Abney, published in London by Macmillan in 1876 for students and practitioners of the photographic process. Its pictures are plain line engravings of apparatus such as a ruled plate with a roller and a coil-and-tube device, plus a spectral chart of silver salt sensitivity curves; a designer could draw on their diagrammatic clarity, labelled lettering and fine hatching for technical or scientific visuals.
