aper, and the other by reduction in the camera. In making slides
by contact, select the negative and place it in the printing frame
and put the lantern plate upon it, film to film. Clamp down the
back and expose just as in making a print. A good method of
exposing is to hold a lighted match about 3 in. from the frame for
three or more seconds according to the density.

Development is carried on in the same manner as with a negative.
The image should appear in. about a minute, and development should
be over in three or four minutes. If the exposure has been
correct, the high lights will stay white throughout the
development and will come out as clear glass after fixing. It is
best to use the developers recommended by the manufacturer of the
plates used, the formulas being found in each package of plates.
It is best, also, to use a plain fixing bath, which must be fresh
and kept as cool as possible in hot weather.

The lantern-slide film that is new on the market can be handled in
the same manner as the glass-plate slide, except that the binding
is different. The results are the same and the slides are not so
bulky to handle. Being unbreakable, they are much used by
travelers. The manner of binding them for use in a lantern is
described on the circular enclosed with the film.

[Illustration: The Camera as It is Arranged in Front of the Window
for Reducing the Size of a Picture, and the Method of Binding the
Slides]

When the negative is larger than the lantern-slide plate, and it
is desirable to reduce the entire view upon the slide, a little
extra work will be necessary. Select a room with one window, if
possible, and fit a light-proof frame into it to keep out all
light with the exception of a hole in which to place the negative,
as shown in Fig. 1. Unless this hole is on a line with the sky it
will be necessary to place a sheet of white cardboard at an angle
of 45 deg. on the outside of the frame to reflect the light
through the negative as shown in Fig. 2. Make or secure an inside
kit to place in the plate holder of your camera to hold the
lantern slide plate as shown in Fig. 3. Draw lines with a pencil,
outlining on the ground glass of the camera the size of the
lantern slide plate, and in the place where the plate will be in
the plate holder when placed in position in the camera. This will
enable you to focus to the proper size. Place the camera in front
of the hole in the frame, place the negative in the hole