The diseases of the season incident to most situations on the tide-waters, now beginning to show themselves here, and to threaten some of our members, together with the probability of a uniform course of things in the Chesapeake, induce us to prepare for leaving this place during the two sickly months, as well for the purposes of health as to bestow some little attention to our private affairs, which is necessary at some time of every year. Our respective stations will be fixed and known, so that everything will find us at them, with the same certainty as if we were here; and such measures of intercourse will be established as that the public business will be carried on at them, with all the regularity and dispatch necessary. The present arrangements of the post office admit an interchange of letters between Richmond and Monticello twice a week, if necessary, and I propose that a third shall be established during the two ensuing months, of which you shall be informed. My present expectation is to leave this place for Monticello, about the close of this or the beginning of the next week. The Secretary at War will continue in this neighborhood until we shall further see that the course of things in the Chesapeake will admit of his taking some respite. I salute you with great esteem and respect. TO COLONEL TATHAM. WASHINGTON, July 28, 1807. SIR,--Your several letters from the 10th to the 23d, inclusive, have been duly received, and have served to regulate our belief of the state of things in Lynhaven, amidst the variety of uncertain reports which were afloat. In mine of the 6th, I mentioned that it would be necessary for me to ask the continuance of this service from you only until I could ascertain the course the squadron of Commodore Douglass meant to pursue. We are now tolerably satisfied as to that course. From everything we have seen, we conclude that it is not their intention to go into a state of general war, or to commit further hostilities than remaining in our waters in defiance, and bring-to vessels within them, until they get their orders from England. We have therefore determined to keep up only a troop of cavalry for patrolling the coast opposite them, and preventing their getting supplies, and the naval and artillery force, now in Norfolk, for its defence. In this state of things, and in consideration of the unhealthy season now approaching at this as other places on the tide-waters, and which we have always retired from about this time, the members of the administration, as well as myself, shall leave this place in three or four days, not to return till the sickly term is over, unless something extraordinary should re-assemble us. It is therefore unnecessary for me to ask any longer the continuance of your labors. You will be so good as to make the proper disposition of whatever articles you may have found it necessary to procure on public account, to make up the accounts