This section is from the book "Photographics: A Series Of Lessons", by Edward L. Wilson. Also available from Amazon: Wilson's Photographics: A Series Of Lessons/a>.
344. With all its advantages, the bromo - gelatin process is not entirely all that is wanted to take the place of the "wet" or bath method of working, and the inventive portion of the craft is still on the search for something better. This, Dr. H. "W". Vogel, the well-known German scientist, claims to have found, and provides an emulsion which photographers can use for coating their plates, and expose it "wet" or "dry," but always discarding the use of the bath. His process of manufacturing the emulsion is patented, and consists in forming a homogeneous mixture con-
 
Continue to: