Toward night a moderate breeze sprang up; the fog, however, continuing as thick as before; and we kept on to the eastward. About the middle of the first watch, a man on the forecastle sang out, in a tone which showed that there was not a moment to be lost,-- ``Hard up the helm!'' and a great ship loomed up out of the fog, coming directly down upon us. She luffed at the same moment, and we just passed each other, our spanker boom grazing over her quarter. The officer of the deck had only time to hail, and she answered, as she went into the fog again, something about Bristol. Probably a whaleman from Bristol, Rhode Island, bound out. The fog continued through the night, with a very light breeze, before which we ran to the eastward, literally feeling our way along. The lead was heaved every two hours, and the gradual change from black mud to sand showed that we were approaching Nantucket South Shoals. On Monday morning, the increased depth and dark-blue color of the water, and the mixture of shells and white sand which we brought up, upon sounding, showed that we were in the channel, and nearing George's; accordingly, the ship's head was put directly to the northward, and we stood on, with perfect confidence in the soundings, though we had not taken an observation for two days, nor seen land; and the difference of an eighth of a mile out of the way might put us ashore. Throughout the day a provokingly light wind prevailed, and at eight o'clock, a small fishing schooner, which we passed, told us we were nearly abreast of Chatham lights. Just before midnight, a light land-breeze sprang up, which carried us well along; and at four o'clock, thinking ourselves to the northward of Race Point, we hauled upon the wind and stood into the bay, west-northwest, for Boston light, and began firing guns for a pilot. Our watch went below at four o'clock, but could not sleep, for the watch on deck were banging away at the guns every few minutes. And indeed, we cared very little about it, for we were in Boston Bay; and if fortune favored us, we could all ``sleep in'' the next night, with nobody to call the watch every four hours.