In 1780, being sent to join General Lincoln at Charleston, Duportail was captured, together with this officer, during the summer; but through the efforts of Congress, they were both exchanged in the autumn. In 1781, he carried despatches to the Count de Grasse, and later the same year had charge of the engineering operations at the siege of Yorktown, being specially mentioned by Washington in his despatches after the capitulation. On the 16th of November, 1781, Congress conferred on him the rank of major-general, and granted him a six-months furlough to visit his native land. He resigned his commission in the United States army on the 10th of October, 1783, and in 1788 was named maréchal-de-camp of the French army. In 1790, he was made minister of war, but resigned a year later, to accept a military appointment in Lorraine. Leaving the army in 1792, he returned to this country in 1794, and remained here until 1802, when, being recalled to France, he died at sea during the voyage home. HENRY KNOX. Henry Knox, born in Boston in 1750, lost his father at an early age. His mother’s income being a slender one, and his devotion to her being very great, he soon felt the need of personal exertion, and before attaining his majority, had established himself as a bookseller. Having a natural fondness for military tactics, he joined a company of grenadiers, and thus when the smouldering fire of dissatisfaction against taxation without representation burst into the flames of the Revolution, Knox had gained practical knowledge of warlike manœuvres. His father-in-law was a pronounced Tory; but his wife, sharing his own sentiments, helped him to escape from Boston that he might join the army. Appreciating our need of artillery, and knowing that no cannon were to be had except those in the old forts along the Canadian frontier, he volunteered to bring this ordnance to Washington’s camp at Cambridge, and accomplished this difficult and hazardous undertaking with such skill and courage that Washington rewarded him with the command of the artillery. This branch of the Continental service being attached to the main body of the army, Knox was in every battle where Washington fought, and never failed to exhibit the judgment, perseverance, and bravery that gained him success in the Canada expedition. On the 27th of December, 1776, Congress appointed him brigadier-general. At the battle of Monmouth, June 28, 1778, he was wounded in his left hand. For his distinguished services at the siege of Yorktown in 1781, Congress appointed him major-general on the 22d of March, 1782. He was one of the three commissioners intrusted with the adjustment of the terms of peace. On the 25th of November, 1783, he received as Washington’s deputy the surrender of the city of New York; and his military career ended with the command of West Point. When the Continental army was about to be disbanded, he conceived the idea of