...anded, Mr. Hildreth, brother-in-law of Gen. Butler, and wife. There was on Tuesday morning a trial of the large rifle cannon recently placed on the Rip Raps. Eleven shells were thrown towards Sewell's Point , three or four of which exploded on the beach, three passed across the point into the channel, and the remainder fell short of the Point Sewell's Point is not visible from the Rip Raps, and the dista...