In the evening the British began to move. Lord Percy was to lead the attack. Twenty-five hundred men were embarked in transports, which were to convey them to the rendezvous at Castle William. A violent storm set in from the east. The transports could not reach their place of destination. The men-of-war could not cover and support them. A furious surf beat on the shore where the boats would have to land. The attack was consequently postponed until the following day. That day was equally unpropitious. The storm continued, with torrents of rain. The attack was again postponed. In the mean time, the Americans went on strengthening their works; by the time the storm subsided, General Howe deemed them too strong to be easily carried; the attempt, therefore, was relinquished altogether. What was to be done? The shells thrown from the heights into the town, proved that it was no longer tenable. The fleet was equally exposed. Admiral Shuldham, the successor to Graves, assured Howe that if the Americans maintained possession of the heights, his ships could not remain in the harbor. It was determined, therefore, in a council of war, to evacuate the place as soon as possible. But now came on a humiliating perplexity. The troops, in embarking, would be exposed to a destructive fire. How was this to be prevented? General Howe’s pride would not suffer him to make capitulations; he endeavored to work on the fears of the Bostonians, by hinting that if his troops were molested while embarking, he might be obliged to cover their retreat, by setting fire to the town. The hint had its effect. Several of the principal inhabitants communicated with him through the medium of General Robertson. The result of the negotiation was, that a paper was concocted and signed by several of the “select men” of Boston, stating the fears they had entertained of the destruction of the place, but that those fears had been quieted by General Howe’s declaration that it should remain uninjured, provided his troops were unmolested while embarking; the select men, therefore, begged “some assurance that so dreadful a calamity might not be brought on, by any measures from without.” This paper was sent out from Boston, on the evening of the 8th, with a flag of truce, which bore it to the American lines at Roxbury. There it was received by Colonel Learned, and carried by him to head-quarters. Washington consulted with such of the general officers as he could immediately assemble. The paper was not addressed to him, nor to any one else. It was not authenticated by the signature of General Howe; nor was there any other act obliging that commander to fulfil the promise, asserted to have been made by him. It was deemed proper, therefore, that Washington should give no answer to the paper; but that Colonel Learned should signify in a letter, his having laid it before the commander-in-chief, and the reasons assigned for not answering it.