Will you be so good as to send a passport to Julian Y. Niemcewicz, an American citizen, of New Jersey, going to Europe on his private affairs? I have known him intimately for twenty years, the last twelve of which he has resided in the United States, of which he has a certificate of citizenship. He was the companion of Kosciusko. Be so good as to direct it to him at Elizabethtown, and without delay, as he is on his departure. Mr. Gallatin's estimate of the number of foreign seamen in our employ renders it prudent, I think, to suspend all propositions respecting our non-employment of them. As, on a consultation when we were all together, we had made up our minds on every article of the British treaty, and this of not employing their seamen was only mentioned for further inquiry and consideration, we had better let the negociations go on, on the ground then agreed on, and take time to consider this supplementary proposition. Such an addition as this to a treaty already so bad would fill up the measure of public condemnation. It would indeed be making bad worse. I am more and more convinced that our best course is, to let the negotiation take a friendly nap, and endeavor in the meantime to practice on such of its principles as are mutually acceptable. Perhaps we may hereafter barter the stipulation not to employ their seamen for some equivalent to our flag, by way of convention; or perhaps the general treaty of peace may do better for us, if we shall not, in the meantime, have done worse for ourselves. At any rate, it will not be the worse for lying three weeks longer. I salute you with sincere affection. P. S. Will you be so good as to have me furnished with a copy of Mr. Gallatin's estimate of the number of foreign seamen? I think he overrates the number of officers greatly. TO MR. GALLATIN. MONTICELLO, April 21, 1807.