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Military signals. The boasted discovery of a system of military signals is not new, as will be seen from the following extract from Alexander Jones' History of Electric Telegraphs, page 125. In alluding to the system of visual telegraphing between New York and Philadelphia by associations of stock brokers and lottery dealers, it remarks as follows: "Their plan was to station men on eminences at every six or eight miles, with telescopes in their hands. They were also provided with flags. At the first call of stocks, at 11 o'clock, in the Board of Brokers at the Merchants' Exchange, the prices at which the stocks chiefly dealt in sold at would be given to the flag man on top of the Exchange, who would communicate the quotations to another flag man in Jersey City, or on top of Bergen Hill, and he to the next, until Philadelphia was reached. The sales in Philadelphia would reach New York by a similar method. The order in which they were sent indicated what stocks were refe