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Scientific American, Vol. 64, No. 17 (1891) (1891)

leaf 3

An illustration from Scientific American, Vol. 64, No. 17 (1891), 1891, leaf 3
s is here folded together with two folds. To this effect, there is more than a million copies of a journal illustrated with made that is a new success for rotary presses, and that the most diverse superpositions and mixtures of solves one of the most interesting problems in printing colors, and… … tain a large circulation) four etched with a _ preparation made by adding a small quan- rotary presses which were ca- pable, all together, of print- tity of phosphoric acid to a cylinders, E and C, while the other entirely covers the gum solution. When a drop of such a preparation ing 36,000 copies…

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