These are photographs colored with liquid water colors and mounted on glass. For several years a process has been taught by which a photograph is rendered transparent by the use of paraffine oil, etc., then mounted on glass, and colored from the back with oil paints. While by this method a picture pleasing at the time could be produced, yet unless the process was perfectly executed the oils would decompose and the picture become yellow and spotted. The use of water colors entirely overcomes these objections, as it is so simple that any one can employ them perfectly, and as there are no oils used in their production they cannot change or turn yellow.