A Manual Of Photography
Forfatter: Robert Hunt
År: 1853
Forlag: John Joseph Griffin & Co.
Sted: London
Udgave: 3
Sider: 370
UDK: 77.02 Hun
Third Edition, Enlarged
Illustrated by Numerous Engrabings
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194 PRACTICE OF PHOTOGRAPHY.
and sponged with clean water on both sides, after which it should
be placed in the acidulated water, and allowed to remain in it
for several hours. Too many sheets should not be placed in the
vessel at the same time. After a time they should be remove
in mass, placed on the slab, and left for halt an hour under
gently flowing water,—this removes all the acid, and all those
metallic and earthy matters which it has removed from the paper.
After this it is to be dried, and it is then fit for photographie
US This chapter has been deemed unnecessarily long ; but, upon
renewing many of the experiments, I have become so convinced
of its importance in all particulars, that I could not induce
myself to curtail it. All who aim at excellence in photography
should repeat the experiments and closely observe the results.