London: Reeve, Benham, and Reeve, 1849. Daguerre. Second ed. 8vo., xxvi, 478 pp., (24) pp. Half calf and marbled paper, with all edges marbled, calf spine and tips replaced. The front marbled endpaper is partially detatched. A very good copy. Item #26214
Hunt (1807-1887) was librarian and keeper of mine records at the Museum of Practical Geology and professor of mechanical engineering of the Royal School of Mines at London. He carried on numerous photographic and chemical experiments and was one of the greatest contributors to the early literature of photography. In 1841 Hunt published the first English treatise on photography, POPULAR TREATISE ON THE ART OF PHOTOGRAPHY. In 1853 he was one of the founders of the Photographic Society of London. His experiments with organic and inorganic light-sensitive substances were most influential in the development of photo-chemistry.
In Chapter VII "Light", Hunt discusses the theories and nature of light, both natural and artificial; mechanisms of the eye, etc.; Chapter VIII "Actinism - Chemical Radiations" is devoted to actinism, the property of light that causes chemicals to combine and decompose, i.e. darkening of horn silver, Niépce's discovery, Daguerre's discovery, photography, phenomena of the Daguerreotype, light products from chemical change, etc.