The next day, about three P.M., passed a large corvette-built ship, close upon the wind, with royals and skysails set fore and aft, under English colors. She was standing south-by-east, probably bound round Cape Horn. She had men in her tops, and black mast-heads; heavily sparred, with sails cut to a t, and other marks of a man-of-war. She sailed well, and presented a fine appearance; the proud, feudal-looking banner of St. George-- the cross in a blood-red field-- waving from the mizzen. We probably were nearly as fine a sight, with our studding-sails spread far out beyond the ship on either side, and rising in a pyramid to royal studding-sails and skysails, burying the hull in canvas and looking like what the whalemen on the Banks, under their stump top-gallant-masts, call ``a Cape Horn-er under a cloud of sail.'' Friday, August 12th. At daylight made the island of Trinidad, situated in lat. 20° 28' S., lon. 29° 08' W. At twelve M., it bore N.W. 1/2 N., distant twenty-seven miles. It was a beautiful day, the sea hardly ruffled by the light trades, and the island looking like a small blue mound rising from a field of glass. Such a fair and peaceful-looking spot is said to have been, for a long time, the resort of a band of pirates, who ravaged the tropical seas. Thursday, August 18th. At three P.M., made the island of Fernando Naronha, lying in lat. 3° 55' S., lon. 32° 35' W.; and between twelve o'clock Friday night and one o'clock Saturday morning crossed the equator, for the fourth time since leaving Boston, in lon. 35° W.; having been twenty-seven days from Staten Land,-- a distance, by the courses we had made, of more than four thousand miles.