Yours of the 10th came to hand late last night. The intentions of the Enemy are yet very mysterious. From the expression of your letter, I take it for granted that General Gray had embarked again after destroying Bedford; and by his hovering about the Coast, and Lord Howe’s coming round again to New port, I cannot but think, that they mean something more than a diversion or deception. The destruction of the Count D’Estaings Fleet is an object of the greatest magnitude, but as that cannot be easily effected, while they lay in the Harbour of Boston, without a cooperation by land and water, I am apprehensive that they mean to possess themselves of such Grounds in the neighbourhood of Boston, as will enable them to carry such a plan into execution. Whether they would do this by landing at a distance and marching thro’ the Country, or by possessing themselves at once of part of the harbour, I cannot determine. I must therefore recommend it to you to keep the strictest watch upon the motions of the Enemy, and if you find them inclining towards Boston, endeavour, with your own force and what you can collect upon the occasion, to prevent them from taking such positions as will favor their designs upon the Fleet.

Upon a supposition that the Enemy mean to operate to the Eastward, I have already advanced three Brigades some distance from the main Body of the Army, ready to move forward, should there be occasion; and I intend to place the whole in such a position, in a day or two, that they may either march to the Eastward, or be within supporting distance of the posts upon the North River, as appearances may require.

I shall govern myself chiefly in my motions, by the advices I receive from you. I therefore most earnestly intreat you to be very clear and explicit in your information, and to let me hear from you every day—tho’ there may be nothing material to communicate, yet it releives me from a state of anxiety, which a suspension of intelligence naturally creates.

I would not have you attempt, in the present situation of affairs, to divide your force too much in order to cover every part of the Country, and as the Enemy have now the superiority by sea, I recommend it to you by all means to keep out of Necks or narrow peices of land with any considerable Bodies of Men. Small guards posted at the most likely places of descent are all that ought to be expected from you. In one of my late letters I mentioned the necessity of taking the public Arms out of the Hands of the disbanded Militia.1 I cannot help repeating the necessity again, because I find our public Magazines are unable to supply the wants of the Army, notwithstanding the great importations of last year. Be pleased to forward my letter to Count D’Estaing with the greatest expedition to whom be pleased to communicate every move of the enemy by land or water, as far as they come under your observation.2 I am &c.