Colonel Senf arrived here the evening before the last. He was employed yesterday and to-day, in copying some actual and accurate surveys, which we had had made of the country round about Portsmouth, as far as Cape Henry to the eastward, Nansemond river to the westward, the Dismal Swamp to the southward, and northwardly, the line of country from Portsmouth by Hampton and York, to Williamsburg, and including the vicinities of these three last posts. This will leave him nothing to do, but to take drawings of particular places, and the soundings of such waters as he thinks material. He will proceed on this business to-morrow, with a letter to General Nelson, and powers to call for the attendance of a proper vessel. I suppose, that your drafts in favor of the quarter-master, if attended with sixty days' grace, may be complied with to a certain amount. We will certainly use our best endeavors to answer them. I have only to desire that they may be made payable to the quarter-master alone, and not to the bearer. This is to prevent the mortification of seeing an unapprised individual taken in by an assignment of them, as if they were _ready money_. Your letter to Colonel Finnie will go to Williamsburg immediately. Those to Congress, with a copy of the papers enclosed to me, went yesterday by express. I will take order as to the bacon you mention. I fear there is little of it, and that not capable of being long kept. You are surely not uninformed, that Congress required the greater part of this article to be sent northward, which has been done. I hope, by this time, you receive supplies of beeves from our commissary, Mr. Eaton, who was sent, three weeks or a month ago to exhaust of that article the counties below, and in the neighborhood of Portsmouth; and from thence, was to proceed to the other counties, in order, as they stood exposed to an enemy.