“I must take the liberty of informing you that whatever treatment Colonel Allen receives, whatever fate he undergoes, such exactly shall be the treatment and fate of Brigadier Prescott, now in our hands. The law of retaliation is not only justifiable in the eyes of God and man, but is absolutely a duty, in our present circumstances, we owe to our relations, friends, and fellow-citizens. “Permit me to add, sir, that we have all the highest regard and reverence for your great personal qualities and attainments; and the Americans in general esteem it as not the least of their misfortunes, that the name of Howe, a name so dear to them, should appear at the head of the catalogue of the instruments employed by a wicked ministry for their destruction.”[106] Nothing can show more impressively the arrogant air assumed by these haughty British officers, than Howe’s reply to this letter. Having curtly stated that he had nothing to do with affairs in Canada he wrote: “It is with regret, considering the character you have always maintained among your friends as a gentleman, that I find cause to resent a sentence, in the conclusion of your letter, big with invectives against my superiors and insulting to myself, which should obstruct any farther intercourse between us.” The humane Americans could not carry out their threat. Prescott was taken to Philadelphia, and thrown into jail, though not put in irons. As his health seemed to be failing he was released on his parole. Thomas Walker, a merchant of Montreal, wished to ascertain how he was situated. “To his great surprise he found Mr. Prescott lodged in the best tavern of the place; walking or riding at large through Philadelphia and Bucks counties, feasting with gentlemen of the first rank in the province, and keeping a levee for the reception of the grandees.”[107] Colonel Allen was held in close confinement and chains, until finally he was exchanged for a British officer. Washington was indefatigable in strengthening his old posts, and seizing new ones which would command portions of the enemy’s lines. General Putnam was exceedingly officious in these operations. The labors of the soldiers, in throwing up these redoubts, were often carried on under a continual cannonade from the British ships. The British became much alarmed. A battery was raised on Phipps farm, where the great mortar, the Congress, was mounted. A British officer wrote: “If the rebels can complete their battery, this town will be on fire about our ears a few hours after; all our buildings being of wood or a mixture of wood and brick-work. Had the rebels erected their battery on the other side of the town, at Dorchester, the admiral and all his booms would have made the first blaze, and the burning of the town would have followed.[108] If we cannot destroy the rebel battery by our guns, we must march out and take it sword in hand.”