the explosive shells. Government Proving Ground at Sandy Hook. The task of moving this great piece of ordnance was no easy —_—_—__+ 0+ Sverdrup’s Discoveries. one. The gun itself weighs about 300,000 pounds, and The long dispatch sent by Capt. Sverdrup from during its construction about 68,000… … throw a projectile weighing 2,370 pounds, or more islands, extends about 200 miles with a muzzle velocity of 2,300 feet per north and south. Its western shores were DERRICK. second, and a muzzle energy of 88,000 foot- seen for sixty or seventy miles north and south of the seventy-ninth parallel, so…
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