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Show ' i each roar station, and lines aro extended ex-tended across tho enemy's lines' on tho map. Whon these lines nro swung through tho posslblo arcs that could lncludo tho gun, thero must bo some point where they would nil meet at tho correct distanco from tho receiving sound stations. That point should locate tho gun. It Is claimed that they can often bo figured down to CO feet. It Is said that In tho Mcsslncs fighting, 63 German guns wcro located in ono day largely by these sound receiving receiv-ing methods. Onco located, a well aimed shell takes care of tbom. |