...r. But the work was prosecuted with such vigor by Chief Engineer (Colonel) John G. Clarke, in person, that by daylight of the 19th the General found it all but completed-stretching from the city to Hutchinson's Island , over which a causeway was built; thence to Pennyworth Island, where another causeway was laid; thence across the Back river to a causeway which led over the swamps to the main land of the Carolina b...