Lot Essay
The term Clich-Verre is generally used to describe the prints that are the made from an exposed and developed glass plate which has had its blackened collodion or gelatin emulsion scratched with a stylus to reveal clear glass. It is therefore a is a graphic medium which combines elements of printmaking and photography. They were first produced in 1839 with the help of Talbot's photogenic drawing process. Corot and Millet became the most famous practitioners of the art in the 1850s when it was first perfected. See Nadeau, Encyclopedia of Printing, Photographic and Photomechanical Processes, pp.69-70