Plain directions for obtaining photographic pictures by the calotype, energiatype, and other processes on paper, including the chrysotype, cyanotype, chromotype, etc., etc, with all the latest improvements
An 1845 London photography manual by J. H. Croucher, published by the opticians T. and R. Willats and booksellers Sherwood, Gilbert and Piper, giving plain practical directions for early paper processes such as the calotype, energiatype and cyanotype to amateurs and practitioners. Its pictures are simple line engravings of hand-built cameras, plate holders and dark-box apparatus drawn in clear outline with labelled parts, offering a designer a crisp, diagrammatic vocabulary of mid-nineteenth-century technical drawing.
