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Scientific American, Vol. 62, No. 18 (May 1890) (1890)

leaf 10

An illustration from Scientific American, Vol. 62, No. 18 (May 1890), 1890, leaf 10
A A new and very simple method of synthesizing seat is located in front of the machine in such a man- indigo has been discovered by Dr. Flimm, of Darm- stadt {Berichte, No. 1, 1890, Science). In study- ing the action of caustic alkalies upon the monobromine derivative of acetanilid Cc H5NH. CO. CH2… … chloride added, when the formation of indigo NEW TIME STAMP OPEN. takes place immediately. The collected blue coloring matter may be readily obtained pure police, messenger, and telephone service, with stock by washing first with dilute hydrochloric acid, tickers, etc., and wherever it is desirable…

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