The boldness with which Barry had performed this dashing exploit won for him a reputation with both friends and foes. The story goes that Howe, struck by the captain's daring, made overtures to him to join the British service, and even went so far as to promise him a reward of £15,000 if he would betray his trust. "Not the value or command of the whole British Navy," was Barry's prompt answer, "would seduce me from the cause of my country!" The French alliance, and the change it wrought upon the face of the war, led the British to determine upon the evacuation of Philadelphia, which came about accordingly in the following summer. But before going away they struck one blow from which the Continental Navy could not easily recover. Major Maitland, with a force of gunboats and barges, accompanied by a detachment of infantry and artillery, made a raid up the river and sought out all the vessels which had been lying snugly concealed there during the winter. They had no batteries, and were in no way capable of offering resistance; and all, including the "Effingham" and "Washington," were burned. A month later the British abandoned Philadelphia. Barry was now appointed to the "Raleigh," one of the best of the thirteen frigates, which had already been at sea under another captain. At this time she was lying at Boston, and on the 25th of September, 1778, Barry weighed anchor and sailed down the harbor, bound on a cruise to the eastward. She had been only six hours out of port, when two large ships were seen approaching her from a distance. These proved to be a British frigate, the "Experiment," of fifty guns, and the sloop "Unicorn." The "Experiment" alone was nearly double the "Raleigh's" size, and Barry used his best endeavors to escape from them. But they had seen him, and crowded sail in chase. Night fell, and concealed both pursuers and pursued. The next day was hazy; but at noon the fog lifted and showed the enemy still far away, but doing all he could to lessen the distance. So the chase continued for the rest of the day and the whole of the night, and the next day too, the enemy occasionally lost to view, and so raising the hopes of Barry and his crew, but each time reappearing, and still in hot pursuit. On the morning of the third day the wind freshened, and the "Raleigh," which now was off the coast of Maine, gradually increased her speed and seemed about to cast off her pursuers; but in the afternoon the breeze again fell light, giving them once more the advantage, until at five o'clock the larger ship, the "Experiment," had barely managed to come up, and opened fire.