The Mercenary Troops have at length abandond Boston on which, I perceive, you will not allow me YET to give you joy. May I not however advise, that the favorable opportunity which this important Event, added to the Season of the year has offerd, be improvd in fortifying the Harbour so as to render it impracticable for the Enemies Ships to enter it hereafter. I hope this fortunate Change of Affairs has not put you off your Guard. Should you not immediately prepare against future Invasions, which may be made upon you before you are aware? Your Sea Coasts must still be defended. We shall soon realize the Destination of the Enemies Forces. Those under the Command of General Howe will probably remain at Hallifax till the Season of the year will admit of their going up St Lawrence River. The Troops coming from Ireland may be destind to New York & will expect to get Possession there. At least they will attempt it. A failure may lead their Views back to Boston; for I am in no Apprehensions that they will think of subduing the Southern Colonies till they shall have first subdued those of the North. The Southern Colonies, I think, are sufficiently provided for, to enable them to repell any Force that may come against them the ensuing Summer. Our Safety therefore much depends upon the Care which New England shall take for her own Preservation and our Vigilance and Success in New York and Canada. There are Forces enough already ORDERD to answer all our Purposes. Our business is, to imitate our Enemies in Zeal Application & Perseverance in carrying our own Plans into Execution.