Gail Erwin demonstrates the Van Dyke Brown photographic process

Gail Erwin's exhibit at the Kingston Gallery in Boston, MA, features Van Dyke Brown prints, a 19th century photographic process. There were many question about the process so this video demonstration was produced to answer them. The chemicals that are mentioned in the video are Ferric Ammonium Citrate, Tartaric Acid and Silver Nitrate. The exhibit runs through Dec 1, 2014.