MODERN HELIOGRAPHIC PROCESSES; MANUAL OF INSTRUCTION IN T...
by Lietze, Ernst
First edition. A technical discussion of this "new art" of reproducing mechanical drawings, etc., by the use of chemicals and light based on the author's practical experiences. He gives formulas and methods of each of the contemporary patents. Of added interest are 10 actual tipped-in samples of illustrations reproduced by the different methods. Samples of Silver Print on Citro-Chloride of Silver Paper-negative, Silver Print on Citro-Chloride of Silver Paper-positive, Ordinary Blue Print - negative, Ordinary Blue Print - Positive, Red Prussiate of Potash Print, Direct Cyanotype, Ink Picture, Carbon Print, Uranium Print developed with Nitrate of Silver, and Uranium Print developed with Red Prussiate of Potash. Ink ownership inscription at top of title page and on free endpaper from J.C. Lewore of Cincinnati dated 1890. Ex-library copy with markings. Perforated library stamp affects all tipped-in samples (not as bad as it sounds).
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