How to make pictures : easy lessons for the amateur photographer (1882)
Price, Henry Clay · New York : Scovill Manufacturing Co. · leaf 41
urface, the pres- ence of which would eventually make a spot or defect in the finished picture. It would not be amiss to dust oft' both sides of the plate. If you cannot detect the surface having the coating of gelatine otherwise, hold the plate between yon and the ruby lantern, and you will then… … holder, place a gelatine plate with its sensitive side facing out.
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
