Paul Jones, when he arrived in Philadelphia, the 18th of February, 1781, was thirty-three years old and had actively served in the United States navy for five years and five months. He never fought another battle under the United States flag; indeed, with the exception of his distressing experiences in Russia, he never fought again under any flag. But to his dying day he did not cease to plan great naval deeds and to hope for greater opportunity to harass the enemy--any enemy. In view of his great ambition and ability, circumstances allowed him to accomplish little. He had only one opportunity, and the way he responded made him famous; but though it brought him honor it did not satisfy him, and the rest of his life was a series of disappointments. His bitterness grew apace, and before he died he was a genuinely pathetic figure. Soon after Jones's arrival at Philadelphia, the Board of Admiralty required him to give "all the information in his power relative to the detention of the clothing and arms in France intended for Washington's army;" and a series of forty-seven questions, on the subject not only of the delay but also on matters connected generally with his cruises, were submitted to him. He attributed, with probable justice, the instigation of this investigation to his enemy Arthur Lee, whom he desired in consequence to challenge to a duel. He was dissuaded, however, from this step, as well as from the publication of a paper he had written called "Arthur Lee in France," in which he made a circumstantial charge against Lee of "treason, perfidy, and the office of a spy," by some of his distinguished friends, including Morris and Livingston. Without either the duel or the publication of the paper, Jones was, however, completely vindicated. He answered the questions with clearness and skill, to the complete satisfaction of the board, which recommended that Congress confer on the hero some distinguished mark of approbation. A committee was appointed to question Jones personally, and the impression he made upon it is another proof of the remarkable suavity, plausibility and magnetism of the man. One of the examining committeemen wrote:-- "From his beginning no one thought of disputing him. Toward the end we seldom ventured to ask him any questions. He made himself master of the situation throughout. At the end the committee felt honored by having had the privilege of listening to him."