The ferrotype and how to make it - The Grian Press

SILVER. 75
plosive force may be obtained from one of
Charles Reade's novels.
The solution of nitrate of silver used by pho-
tographers for the preparation of sensitized sur-
faces, or surfaces rendered sensitive to the action
of light by the deposition thereon, upon immer-
sion in the silver solution of certain salts of sil
ver, such as iodides or bromides of that metal, is
the most important solution claiming the atten-
tion of the photographer.
The formulas for the preparation of such a
solution are almost innumerable, and they are as
diverse as are the minds of their authors or in-
ventors, and it would appear that minds of no
ordinary inventive powers have been engaged in
such labors, judging from published formulas,
which may be found in every library of photo-
graphic works.
'he preparation of a silver solution or bath,
however, is a matter of no small importance, as
upon its successful operation depends all the in-
terests of the establishment. The perfect opera-
tion of the silver bath is a matter of primary
importance to the operator, no matter how it
may be prepared, or by what formula.
There are various methods used in the prepa-
ration of nitrate of silver by manufacturing
chemists—each one may have his own favorite
process. One firm may take pleasure in pro-
ducing a quality that shall be remarkable for
the beauty and size of its crystals; another, for