...e penetration of the enemy into the interior, either on the line towards Lake City, or into the lower part of the State, to which end a position has been selected on the St. John's, a few miles above Jacksonville , for a battery of one rifled thirty-two pounder, three rifled thirty-, and one twenty-, and one ten-pounder Parrott's, and two eight-inch seige Howitzers, by which, with torpedoes in the river, it is...