Since the distortion of the photograph arises from the unequal expansion
of the paper when wet, it becomes a question whether something may not be
done in the selection of the paper itself. It may be that some makes vary
much less than others in the "length against width" extension of the
surface by wetting. It must be remembered that for gelatine emulsion we
are not nearly so limited in the selection of paper as when it is
required to be albumenized. In the latter case the image is in the paper,
whereas with gelatine the image is contained in the surface coating. I
may mention that the best plain, i.e., not enameled, but resembling that
of ordinary albumen paper, surface that I have seen upon gelatine paper
was upon some foreign post that I had obtained for another purpose. The
emulsion employed was that described by Mr. J.B.B. Wellington, and this
gentleman agreed with me in attributing the superiority of the surface
obtained to the fine quality of the paper upon which the emulsion had
been coated. Some commercial samples appear to be coated upon paper of
somewhat coarse texture. This does not show when the print is enameled.
The unequal expansion of paper is a subject of interest, not only in
connection with gelatine paper for development, but with various
photographic processes.
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