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Scientific American Supplement, No. 586, March 26, 1887 by Various
page 59 of 134 (44%)
will hesitate to acknowledge his equal.--_Journal of the Association of
Engineering Societies_.

* * * * *




PRINTING LANTERN PICTURES BY ARTIFICIAL LIGHT ON BROMIDE PLATES FROM
VARIOUS SIZES.

By A. PUMPHREY.

[Footnote: Read before the Birmingham Photographic Society. Reported in the
_Photo. News_.]


There can be no question that there is no plan that is so simple for
producing transparencies as contact printing, but in this, as in other
photographic matters, one method of work will not answer all needs.
Reproduction in the camera, using daylight to illuminate the negative,
enables the operator to reduce or enlarge in every direction, but the
lantern is a winter instrument, and comes in for demand and use during the
short days. When even the professional photographer has not enough light to
get through his orders, how can the amateur get the needed daylight if
photography be only the pursuit in spare time? Besides, there are days in
our large towns when what daylight there is is so yellow from smoke or fog
as to have little actinic power. These considerations and needs have led me
to experiment and test what can be done with artificial light, and I think
I have made the way clear for actual work without further experiment. I
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