Orders are given to our army to hold themselves in readiness to march at a moment's warning. "I'll meet you at Philippi," said the ghost of Cæsar to Brutus. Sunday Noon. Being quite sick with a violent cold, I have tarried at home to-day. I find the firing was occasioned by our people's taking possession of Nook's Hill, which they kept in spite of the cannonade, and which has really obliged our enemy to decamp this morning on board the transports, as I hear by a messenger just come from headquarters. Some of the selectmen have been to the lines, and inform that they have carried away everything they could possibly take; and what they could not, they have burnt, broke, or hove into the water. This is, I believe, fact; many articles of good household furniture having in the course of the week come on shore at Great Hill, both upon this and Weymouth side,--lids of desks, mahogany chairs, tables, etc. Our people, I hear, will have liberty to enter Boston,--those who have had the small-pox. The enemy have not yet come under sail. I cannot help suspecting some design, which we do not yet comprehend. To what quarter of the world they are bound is wholly unknown; but 't is generally thought to New York. Many people are elated with their quitting Boston. I confess I do not feel so. 'T is only lifting the burden from one shoulder to the other, which is perhaps less able or less willing to support it. To what a contemptible situation are the troops of Britain reduced! I feel glad, however, that Boston is not destroyed. I hope it will be so secured and guarded as to baffle all future attempts against it. I hear that General Howe said, upon going on some eminence in town to view our troops, who had taken Dorchester Hill, unperceived by them till sunrise, "My God! these fellows have done more work in one night than I could make my army do in three months." And he might well say so; for in one night two forts and long breast-works were sprung up, besides several barracks. Three hundred and seventy teams were employed, most of which went three loads in the night, besides four thousand men, who worked with good hearts.