tion, or, in
other words, if a dry-plate is exposed one minute without the yellow
solution it would have to be exposed twenty minutes through a
three-grain solution of bichromate of potassium or ammonia. It
produces wonderful results on an oil painting or any highly colored
object.

Another method, and the one best adapted for landscapes, is to bathe
the plate in erythrosine and then expose it through a yellow glass
screen.

As an illustration, suppose we have before us a beautiful landscape.
In the foreground beautiful foliage, in the center a lake, in the
distance hills, with a bluish haze appearing pleasing to the eye, also
a nice sky with light clouds. Now make a plain negative, and see what
has become of your clouds, hills, and the distance--not visible! Some
photographers have been led to think that by underexposing they retain
the distance, but they sacrifice the foreground; besides, it does not
produce an orthochromatic effect.

But it is a good idea to expose longer on the foreground than you do
on the distance. This can be done by raising the cap of the lens
skyward and gradually shut off, giving the foreground more exposure.

Plates are prepared for orthochromatic work as follows: Take any
ordinary rapid dry plate, place it in a bath containing

Distilled water 200 c.c.
Strong liquid ammonia 2 c.c.

Rock it for two minutes, work as dark as you possibly can. Now take it
out, and place it in the second bath for one and one-fourth minutes
and keep it rocking. Have on hand for use a stock solution of

Distilled water 1,000 parts.
Erythrosine "Y" brand 1 part.

Prepare second bath as follows:

Erythrosine stock solution 25 c.c.
Distilled water 175 c.c.
Strong water ammonia 4 c.c.

After removing the plate, dip it again face down to rinse off any
particles of scum, etc., that may get in the bath accidentally. This
bath may be used for one dozen 8 by 10, when it should be thrown away
and fresh bath used.

After the plates come out of the last bath, they should be stood on
clean blotting paper to absorb the excess of solution. I would also
advise to use clean fingers. Pyro. or hypo. on the fingers is a
drawback to success.

After plates have been drained, place them in a cleaned rack in an
absolutely light-tight closet, with air holes so constructed as t