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Show rcUARD CHARTS FROM ENEMY Employees of Hydrographic Office Work at Top Speed in Turning Out Maps for Naval Officials. Employees of the 1 hydrographic office of-fice In Washington are being driven at top speed in turning out maps and charts for the benefit of the naval officials. of-ficials. Special attention is being given to the charts of harbors which have been mined. Each chart that Is prepared pre-pared shows the exact location of the mines. All told, there are some l,t00 charts on which the office has been at work since the severing of diplomatic relations with Germany. It has been found necessary to make minor changes in many of the original charts in the files of the office. Every precaution is being taken to prevent the. charts from falling Into the hands of German agents or sympathizers. sym-pathizers. The printers are required to account for every sheet of paper they use. If there is a slight in accuracy ac-curacy in the printing the damaged sheet is destroyed. The printer, with an official of the department as a witness, wit-ness, goes to the engine room and throws the damaged sheet into the fire. , , - |