*** Explanation.--A, the inner work or redoubt; bbb, a high, thick stone wall, built by Montressor, with indentations, where the men boiled their kettles. This wall was pierced with loop-holes for musketry. cccc block-houses, built of wood, with loop-holes, and mounting four pieces of cannon each, two on the lower platform; ddd, barracks; eee, stockadoes; fff trous de Loup; g g, ravelins. On the southeast side were two strong piers, and a battery mounting three cannons. [[[Washington's Efforts to Re enforce his Army.--Conduct of Gates and Putnam.--Second Attack on Fort Mifflin.]]] {297}tured, and no other formidable enemy requiring a large force in that quarter; but that officer, doubtless willing to see his _rival_ unsuccessful, gave no heed to his orders until longer non-compliance would have been positive disobedience. * To break up the encampment at Whitemarsh, and move the army to the west side of the Schuylkill, would be to leave depositories of stores and hospitals for the sick within reach of the enemy. It would also leave the fords of the Schuylkill in the custody of the royal troops, and render a junction of the expected Northern forces with the main army difficult, if not impossible. Furthermore, it might bring on a general engagement, which, with his weakened forces, the commander-inchief knew might be fatal. Thus situated, Washington viewed the progress of the enemy in his designs upon Fort Mifflin with intense anxiety. The British erected five batteries on Province Island, of eighteen, twenty-four, and thirty-two pounders, within five hundred yards of Fort Mifflin. They also brought up, by the new channel made between Hog Island and the main by the changing of the current by the _chevaux de frise_, a large floating battery, mounting twenty-two twenty-four pounders, within forty yards of an angle of the fort. They also brought to bear upon the fort four sixty-four gun ships, within nine hundred yards, and two forty gun ships. Altogether the enemy had fourteen strong redoubts, and these were well manned and furnished with heavy artillery. On the 10th of November, the enemy opened their batteries on land and water, and for six consecutive days poured a storm of bombs and round shot upon the devoted fortification. With consummate skill and courage, Lieutenant-colonel Smith directed the responses from the ordnance of the fort. The artillery, drawn chiefly from Colonel Lamb's regiment, were commanded by Lieutenant Treat, who was killed on the first day of the siege, by the bursting of a bomb. On that day the barracks alone suffered, but on the morning of the 11th the direction of the enemy's fire was changed; a dozen of the strong palisades were demolished, and a cannon in an embrasure was disabled. The firing did not cease until midnight, and many of the garrison were killed or wounded. Colonel Smith, the commander, had a narrow escape. He had just gone into the