Meanwhile, the situation of the Americans had become critical and alarming. They had, indeed, lost comparatively few of their number; but it was discovered, we might almost say to their dismay, that their ammunition was nearly exhausted. They had little prospect of any further supply; they had few, if any bayonets, and, as to rëinforcements, though extremely desirable, and now necessary, they could indulge only slight hopes. They were, however, cheered by the prospect of a rëinforcement of three hundred men at this critical juncture. The regiment of Colonel Gardiner, stationed at Charlestown, although they had received no orders to that effect, that gallant officer volunteered to bring to their assistance. Most unfortunately, however, just as he was descending to the lines, a musket-ball struck him, which soon after proved mortal. In consequence of this untoward event, his regiment became disordered, and but a single company that marched from Charlestown, under command of Captain Harris, participated in the action. It was, however, and well does it attest their patriotic courage, the very last to leave the field. The history of the American war furnishes many an incident of thrilling interest, and many an instance of heroic bravery and devotion to the cause of liberty: the last moments of Colonel Gardiner may be ranked among the number. On receiving his wound, he was borne from the field by some of his men; when his son, a youth of only nineteen, and a second lieutenant in Trevett's artillery company, rushed forward to his father's aid. On beholding him, said the father: "Think not of me, my son. I am well. Go to your duty!" And the son obeyed, and hastened to his post, while the father was borne from the field to die. Is it a matter of marvel that people should succeed in a struggle where such lofty patriotism fired their bosoms, and, in pursuing which, some of the tenderest and strongest ties of our nature were sacrificed for their country's good? [Illustration: Death of Colonel Gardiner.] The British troops, as we said, were again advancing. Without bayonets, with a few charges of powder remaining, the Americans waited in silence to receive them as they were able. Stones and the stocks of their muskets supplied the place of powder and ball. Richardson, a private in the Royal Irish regiment, was the first to mount the parapet; but he fell the next moment. Nearly at the same time, Major Pitcairn, whose insolence and inhumanity at Lexington will not soon be forgotten, appeared upon the parapet, and, as if actuated by a similar spirit now as then, he exultingly exclaimed: "The day is ours!" But here he met a deserved fate; for, while the words still lingered on his lies, a bullet from a musket, fired by a colored man named Salem, pierced his body, and he fell and expired.