James Curtis Booth (1810-1888) writes to James Pollock (1810-1890), Director of the United States Mint, to discuss a new method of "granulating gold and silver for the purpose of refining them" as proposed by a Mr. John Feix. Booth recommends a trial of this method.
Numismatic selections from Scientific American: 1870 - Ancient and Modern Coinage, 6/25; Currency of Japan, 12/10; How French Bank Notes are Made, 1/1; Our New Paper Currency, 3/26 (22n13); Improved Dish-Washing Machine, How Counterfeit Notes are Made, and more, 10/29 (23 n 18).
