The silver sunbeam : a practical and theoretical text-book on sun drawing and photographic printing (1873)
Towler, John, 1811-1889 · New York : E. & H.T. Anthony · leaf 602
564 PRINTING ON ALB UMENIZED PAPER. a little of the water in which the prints are washing. If there be any hyposulphite in the water, the blue color will be immediately discharged. If the mixture in the vial re- main blue, it is evident … washing, and at the same time insuring the absence of hypo- sulphite of soda, has been proposed and is practiced by Mr. H. J. Newton, of New York. After entirely changing the water a number of times, he soaks the prints for a short time in a very weak solution (a half grain to an ounce of water) of…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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