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THE PHOTOGRAPHIC NEWS,
September 4, 1858, p.34
HIGHLY-GLAZED ALBUMENISED PAPER.--HOW TO MOUNT A PICTURE.
Wolverhampton, Sept. 16th, 1858.
DEAR Sir,--Will you kindly oblige me with a few good hints on
salting and albumenising paper, viz., the right sample of paper,
with quantity and description of chloride best
suited to obtain violet tints? I also desire a rather
highly-glazed surface, which I have not yet been able to get by
following the, instructions laid down in Hardwich's formula. The
glaze is only slightly perceptible even with a very small quantity
of water to the albumen. What would be the result of floating twice,
allowing the sheet to dry in the interval? I fix and tone in one
bath of hypo. and gold.
Can you explain how it is, that when I come to mount my proof the
gum sinks into the paper and completely spoils it? Can it be from
too much washing, or is the fault in the paper?
ALBUMEN.
[To obtain a highly-glazed albumenised surface on positive paper,
it is necessary to: use a thin sample of paper (we have found
some of Marion's make excellent), and also not to have any
water in the albumen. Either chloride of sodium or chloride of
ammonium may be used (for further directions to obtain dark prints,
see answer to Amateur). If the picture be still
not glossy enough, we should think that it might be re-albumenised
with advantage, either before making sensitive, or after tie picture
is finished in this latter case, however, it must subsequently be
floated on weak alcohol and water (one part spirit to four of
water), in order to coagulate the albumen.
The reason why the gum sinks through time proof in mounting is,
that the size is removed from the paper tinting the washings. It can
be resized by soaking in a hot solution of gelatine (about 40 grains
to the ounce), and dried, if it be desired to use gum ; but we
should recommend the employment of starch paste, such as is employed
for domestic purposes. This is by far the best cement for mounting
photographs we have met with, and it has the further advantage of
not requiring the picture to be sized, but it can be used at once.
Apply it with a brush, and avoid, as much as possible, the presence
of small gelatinous lumps of starch on the back of the picture when
it is laid on the mounting card.]
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