This historic book may have numerous typos and missing text.
Purchasers can download a free scanned copy of the original book
(without typos) from the publisher. Not indexed. Not
illustrated.1884 Excerpt: ... PROCESSES IN USE TO-DAY FOR THE
REPRODUCTION OF WORKS OF ART, Mechanical, Engineering and Map
Drawings. Before entering into a detailed description of the
various processes now in use in the reproduction of the
manybeautiful works of art, maps, mechanical drawings,
illustrations, &c., it might be well to state that, due to the
constantly increasing number of discoveries in the sciences of
optics and chemistry, the great rivalry between large publishing
houses, the diffusion of knowledge on art, and the increased
appreciation of artistic things, many of the methods herein
described are undergoing changes and improvements in the details,
with increasing ranges in application. This is especially true of
the various applica ti'fttfs of. phcftSgrphy. Good paintings, .:
engravings.andetphings, and fine photograph.wiM; always'-he
appreciated by educated people. The various patented processes must
fluctuate with a very uncertain popular taste. I find the following
to be the practical processes of the present day: 1. Sensitive
paper processes. 2. Hektograph. 3. Engraving. 4. Electrotypy.
5-Lithography. 6. Photography.' 7. Miscellaneous. Mention must be
made of the fact that many of the fine works of the old masters are
frequently copied, not only by artists desirous of studying them,
but by others for pecuniary purposes, and so skillfully is this
done that the judgment of experts will sometimes fail to
distinguish them from the originals, for which they are falsely
sold., Sensitive Papers.--The process in general use to-day in
large manufacturing establishments, architects' offices, &c.,
is ordinarily known as the "blue paper" process, so called because
the sensitized surface turns from a dark grey to a blue color on
exposure to the light and after washing. The drawi...
General Books LLC
|Country of origin:
James Sumner Pettit
||246 x 189 x 1mm (L x W x T)
||Paperback - Trade
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