...h, Major Johnson makes the notes following: August 16th. Engineers' working force, 350 to 450, having been engaged day and night for six weeks, has converted the two faces of Sumter nearest to Morris island into a compact redan of sand, encased with brick, having a height of 40 feet and general thickness of 25 feet, with portions of the gorge 35 to 40 feet thick. Upward of twenty guns have been remove...