42. The day was wearing on. It was now five o'clock. If the Americans can hold on until the friendly darkness sets in, they may retain possession of Charlestown and force the British to evacuate Boston. General Ward was at Cambridge, trying in vain to secure order in time for action. General Knox ranged up and down the lines, frantically urging the men to follow him to the fray. Putnam, blazing with excitement and fully comprehending the danger, was everywhere animating and urging on the fresh troops. Now he sent almost frantic appeals for powder; now he implored the men in reserve to move at once, and now he rallied his own men to repel the attack upon his own lines. A considerable force was at last rallied to march, but upon reaching Charlestown Neck the firing from the British ships was so deadly that they dared not venture to cross. In the redoubt was the courage of despair. The powder had given out, and for many of the muskets only a single cartridge remained to meet the coming charge. But all remained firm while the sun slowly sunk in the west. 43. After their second repulse, the force under Lord Howe, cowed and demoralized, refuse to again advance into the jaws of death. The idea is gaining ground that the rebel position is impregnable, and that a wise policy demands that no more blood shall be shed in a vain endeavor to reduce it. The impetuous Sir Henry Clinton refuses to take this view of the situation, and his counsels are heeded. Every military resource at the command of General Gage is now brought into requisition. All the ships in the harbor are ordered to direct their fire upon the fort and the line of communication. New batteries are erected by competent engineers to sweep through the outer breastworks and render them untenable. The reserve forces are ordered up, and every available man is in the ranks. The charge must now be made on every side and the little band of eight hundred literally crushed by numbers. All this and the final charge must be made within the few hours of remaining daylight, or British power is forever at an end in America.