I had the pleasure of addressing you a few lines by the post, on the subject of the yellow fever, on the 13th. ult.; but not having been favored with an answer; and apprehensive that it is owing to my having directed my letter to you at Washington instead of Monticello; I take the liberty of troubling you with a copy thereof as below.

With the highest respect, I have the honor to be Sir your obedient servant