1 janv. 1850 - Silver Gelatin Print

Description:

The gelatin silver process is the photographic process used with currently available black-and-white films and printing papers. A suspension of silver salts in gelatin is coated onto a support such as glass, flexible plastic or film, baryta paper, or resin-coated paper. Particularly popular in the 1880's.
source: https://www.loc.gov/rr/print/coll/589_gelatinsil.html