=173. Retreat of Cornwallis.=—When Cornwallis found an empty camp before him and heard the sound of cannon in the direction of Princeton, he fell back at once, in order to protect his stores. At Princeton the full meaning of the disaster was revealed. Washington, at no time strong enough to risk a general battle, now contented himself with destroying bridges, harassing the enemy at every point, and finally taking up a commanding position on the heights of Morristown. To support himself on either flank, he ordered Heath to come down from the highlands of the Hudson to Hackensack, and Putnam to advance from Philadelphia to Trenton. Conrwallis, finding himself thus confronted, withdrew to Paulus Hook and New York. Thus, in the dead of winter, Washington, with a greatly inferior force, had fought two successful battles, had taken prisoners numbering more than a third of his whole army, and had practically driven the British out of New Jersey. This campaign saved the Revolution. [Illustration: CONTINENTAL CURRENCY.] =174. Influence of Washington’s Success.=—The influence of Washington’s success was shown at once in many ways. In the first place it encouraged men to reënlist. The period for which many of the recruits had gone into the army had expired on the 1st of January. They had received very little pay, and the paper money they got had now fallen greatly in value. In the face of a defeat, few would have reëntered the service; but for the payment of those who would reënlist, Washington pledged his own fortune, and thus succeeded in keeping his army intact. Another beneficial effect was shown in the influence exerted upon the British army and the Tories. Large numbers of Hessians now deserted, in order to avail themselves of the offers of land that had been made by Congress; and many men of doubtful loyalty who, a few months before, had accepted the pardon offered by Howe, now made patriotic response to the counter-proclamation of Washington, requiring that they should either retire to the British lines or take the oath of allegiance to the United States. [Illustration: MARQUIS DE LAFAYETTE.]