(ORIGINAL.)

Richmond, May the 24th, 1781.

MY DEAR GENERAL.—The junction of Lord Cornwallis with the other army at Petersburg was an event that, from local circumstances, and from their so great superiority, it was impossible to prevent, it took place on the 20th, and having lost every hope to operate, a timely stroke in conjunction with the Pensylvanians, my ideas were confined to defensive measures. I therefore moved up to Richmond, where precautions were taken to remove every valuable property, either public or private.

By an officer that was in Halifax after Lord Cornwallis, I hear he has not left any post at that place, it appears, his sick and wounded remained at Wilmington, and were reimplaced by that garison. Reports concerning the numbers are so different, that I cannot trust anything but my eyes, until such an opportunity offers, this is the order of march, in which it is said his Lordship crossed Roanoke. Col. Tarlton's legion, Col. Hamilton's corps, 23d, 71st, 33d, British regiments, 200 tories, an Hessian regiment, the light infantry and guards with six field pieces. I am told General Leslie and Genl. O'Hara are with him, I have received successive and repeated accounts, that a British fleet of transports was arrived at Hampton, they were said to consist of 11 large vessels, and 16 smaller ones, under convoy of three large frigates. Mr. Day D.Q.M. at Williamsburg, writes that on the 22nd, 12 sail of large ship; a sloop, and schooner got underway opposite James Town; those ships full of men, and some horses on board the sloop. We have no accounts of any fleet having sailed from New-York.

Yesterday afternoon, we had a heavy rain, which Colonel Tarlton improved in surprising some militia in Chesterfield County, thirty of whom fell into his hands.

This morning at 9 o'clock the enemy moved from Peteraburg towards City Point, and destroyed the bridge they had lately constructed over Appamatoc. I have just received accounts, that a body of them has landed at Westover. These are said to be the men who came up the river from Hampton, previous to which General Arnold had received a small reinforcement from Portsmouth.

To my great mortification, I have heard this morning, that the Pensylvanians are not so near as I had been, by every account positively assured. General Wayne writes me he will hasten to my support, and I am confident he will not lose time at this critical moment, but before he arrives, it is impossible that 900 continentals and 40 horses, with a body of militia by no means so considerable as they are reported to be, and whom it is so difficult to arm, be with any advantage opposed to such a superiority of forces, such a number of cavalry, to which may be added, their very prejudicial command of the writers.

Our handful of men being the point to which militia may be collected, and the only check, however small it is, that the enemy may have in this state, it ought, I think, to be managed with a great deal of prudence as its preservation is so very important to the fate of operations in Virginia.

With the highest respect. I have the honor to be Yours &c.

TO GENERAL WASHINGTON.