The revolt of a part of the Pennsylvania line, which occurred in January, 1781, afforded a new occasion for the exercise of Washington's pacific wisdom. He had felt the grievances of the army too warmly to be surprised when any portion of it lost patience, and his prudent and humane suggestions, with the good management of General Wayne, proved effectual in averting the great danger which now threatened. But when the troops of New Jersey, emboldened by this mild treatment, attempted to imitate their Pennsylvania neighbors, they found Washington prepared, and six hundred men in arms ready to crush the revolt by force--a catastrophe prevented only by the unconditional submission of the mutineers, who were obliged to lay down their arms, make concessions to their officers, and promise obedience. As we are not giving here a sketch of the Revolutionary War, we pass at once to the siege and surrender at Yorktown, an event which shook the country like that heaviest clap of thunder, herald of the departing storm. All felt that brighter skies were preparing, and the universal joy did not wait the sanction of a deliberate treaty of peace. The great game of chess which had been so warily played, on one side at least, was now in check, if not closed by a final check-mate; and people on the winning side were fain to unknit their weary brows, and indulge the repose they had earned. Congress and the country felt as if the decisive blow had been struck, as if the long agony was over. Thanks were lavished on the commanders, on the officers, on the troops. Two stands of the enemy's colors were presented to the Commander-in-Chief, and to Counts Rochambeau and De Grasse each a piece of British field ordnance as a trophy. A commemorative column at Yorktown was decreed, to carry down to posterity the events of the glorious 17th of October, 1781. There was, in short, a kind of wildness in the national joy, showing how deep had been the previous despondency. Watchmen woke the citizens of Philadelphia at one in the morning, crying "Cornwallis is taken!" Sober, Puritan America was almost startled from her habitual coolness; almost forgot the still possible danger. The chief alone, on whom had fallen the heaviest stress of the long contest, was impelled to new care and forecast by the victory. He feared the negligence of triumph, and reminded the government and the nation that all might yet be lost, without vigilance. "I cannot but flatter myself," he says, "that the States, rather than relax in their exertions, will be stimulated to the most vigorous preparations, for another active, glorious, and decisive campaign." And Congress responded wisely to the appeal, and called on the States to keep up the military establishment, and to complete their several quotas of troops at an early day. With his characteristic modesty and courage, Washington wrote to Congress a letter of advice on the occasion, of which one sentence may be taken as a specimen.