FIG. 55.—STAMP CAMERA.
FIG. 56.
STAMP PHOTO.
It contains a number of lenses all of the same focus. In front is an easel where the portrait is attached, surrounded by a suitable border. The images given are about the size of postage stamps (see Fig. 56), and when the negative is printed on a printing out or developing paper, toned or developed, they can be perforated and gummed at the back. They are very useful for sticking to letters, envelopes, and for business purposes.
[LUMINOUS PHOTOGRAPHS.]
There are several different ways of making these. Obtain some Balmain's luminous paint, and coat a piece of cardboard with it. Place this in the dark until it is no longer luminous; place this behind a glass transparency and expose to light, either daylight or, if at night-time, burn a small piece of magnesium wire. Return to the dark, remove the transparency, and a luminous photograph is obtained on the prepared card. A simple plan is to merely expose a piece of the prepared cardboard to the light and place it behind a transparency; then retire to a darkened room. The luminous paint, showing through it, will have a very pretty effect. If no glass transparency is at hand, a silver print can be used, if previously oiled and rendered translucent by vaseline or any other means.