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Scientific American Supplement, No. 401, September 8, 1883 by Various
page 18 of 136 (13%)

The process of A.C.A. Thiebaut is as follows: the paper has the
following advantages:

First. The sensitive coating is regular, and its thickness is uniform
throughout the entire surface of each sheet.

Second. It can be exposed for a luminous impression in any kind of slide
as usually constructed.

Third. It can be developed and fixed as easily as a negative on glass.

Fourth. The negative obtained dries quite flat on blotting paper.

Fifth. The film which constitutes the negative can be detached or peeled
from its support or backing easily and readily by the hand, without the
assistance of any dissolving or other agent. Thus this invention does
away with all sensitive preparations on glass, which latter is both a
brittle and relatively heavy material, thus diminishing the bulk and
weight of amateur and scientific photographers' luggage when traveling;
it produces photographic negatives as fine and as transparent as those
on glass, in so much that the film does not contain any grain; and,
lastly, it admits of printing from either face of the film, as regards
the production of positives on paper or other material, as well as
plates for phototypy and photo-engraving, which latter processes require
a negative to be reversed.

For the manufacture of my sensitized film paper:

First. A gelatinized sheet of paper is properly damped with cold water,
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