As the little vessel rounded Cornwall Head, the more northerly of the two great promontories which terminate England on the west, a tremendous swell from the Atlantic met her, whilst the tide, which ran strongly down St. George’s Channel, combining with the swell, raised the waves to such a height as to render her position in the highest degree alarming. Dodd would not put back, and after a night of severe struggle, the adventurers succeeded in rounding the Land’s End, and found themselves in a comparatively tranquil sea. Next day the sun shone with great brilliance, and revealed the beauties of the South Coast as they steamed along it towards Plymouth, which they reached at eleven o’clock in the morning. As the THAMES passed the various ships at anchor, the sailors on board ran in crowds to the sides of their vessels or climbed the rigging for a better view. The harbour-master, who had never seen a steam vessel before, was as much excited when he boarded the THAMES as a child is in getting possession of a new plaything. The whole of the following day (Wednesday) was occupied in showing the capabilities of the steamer to the Port-Admiral and to the naval officers who went on board. The THAMES left Plymouth at noon on Thursday for Portsmouth, where she arrived at 11 o’clock on Friday morning, having steamed 155 miles in twenty-three hours. At Portsmouth she created a greater sensation than at any of the ports she had visited. Tens of thousands of spectators assembled to gaze at her; and the number of vessels that crowded around her was so great, that it became necessary to request the Port-Admiral to assign the voyagers a guard, in order to preserve some degree of order. The THAMES steamed into the harbour in the most brilliant style, travelling with the aid of wind and tide at the rate of between twelve and fourteen knots an hour. A court-martial was sitting at the time on board the GLADIATOR frigate, but the novelty of the steam-boat presented an irresistible attraction, and the whole court went off to her (except the president). At an early hour next morning (Saturday), the Port-Admiral, Sir Edward Thornborough, sent his band and a guard of marines on board, and soon afterwards followed in person, accompanied by three admirals, eighteen post-captains, and a large number of ladies. The morning was spent very pleasantly in steaming amongst the fleet, and running over to the Isle of Wight. The Admiral, and all the naval officers, expressed themselves delighted with the THAMES.