nies the paper, I know no
preventive except to mount the prints while dry with the dry mounting
tissue. As the paper when wet stretches one way considerably, as much as a
third of an inch on a ten- or twelve-inch length, provision must be made
in trimming, especially if mounts with centers of a given size are used.

The paper being covered with an emulsion which in warm weather is very
soft while wet, mounting is somewhat more difficult than with some of the
other papers. My method is to mount not more than half a dozen at once,
placing them face down, one on top of the other, on a glass or ferrotype
plate, blotting off the surface water and spreading the paste over the top
one in the usual way. I place this on the mount and then stretch over it
smoothly a damp handkerchief or piece of very thin rubber cloth, rubbing
the print down with my hands, seldom using the squeegee and then very
lightly. By this method abrasion of the surface seldom results and
air-bells are unknown. Owing to the strong contracting power of the paper
in drying, the mounting paste must be used freely, especially at the edges
of the print.

Apart from the methods of procedure here given, there are innumerable
modifications covering every detail of contact printing and enlarging on
bromide paper. Most of these have been given careful trial as published,
but few have quite fulfilled the expectations they created.

BOOKS.

Manuals dealing with the manipulation of the various brands of paper may
also be obtained, generally _gratis_, from the various manufacturers of
bromide paper or their American agents as follows: The Eastman Kodak Co.,
Rochester, N. Y.; The Defender Photo Supply Co., Rochester, N. Y.; J. L.
Lewis, New York City.

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