We have been continually endeavoring to obtain a deduction of the duties on American whale oil. The prospect was not flattering. I shall avail myself of the information contained in your letter to press this matter further. Mr. Barrett has arrived here, and the first object for his relief, is to obtain a dissolution of his former contract. I will thank you for some copies of the Prussian treaty by the first opportunity, and take the liberty of troubling you to forward the packet of letters which Mr. Smith, the bearer of this, will have the honor of delivering to you. I beg the favor of you to present my most respectful compliments to Mrs. Adams, and to be assured yourself of the sentiments of sincere esteem and respect with which I have the honor to be, dear Sir, your most obedient, and humble servant. TO MR. JAY. PARIS, September 26, 1786. SIR,--The last letters I had the honor of writing you were of the 11th and 13th of August. Since that, I have been favored with yours of July 14th and August the 13th. I now enclose you such letters on the Barclay negotiations as have come to hand since my last. With these, is the copy of a joint letter from Mr. Adams and myself to Mr. Lambe. In mine of August 13th, I mentioned that I had proposed it as a subject of consideration to Mr. Adams, whether the mission of Mr. Barclay to Algiers might answer any good purpose. He is of opinion that it could not. I have, therefore, informed Mr. Barclay, who by this time, is probably in Spain, that he is at liberty to return to this place, to London or America, as he shall think proper. You will perceive by the letter from Mr. Carmichael, that it is the opinion of the Counts de Florida Blanca and D'Expilly, that a treaty with the Ottoman Porte is necessary before one can be made with Algiers. Such a treaty will require presents, not indeed as the price of the peace, but such as are usually made in compliment to their ministers. But as it would be ineffectual towards opening to us the Mediterranean until a peace with Algiers can be obtained, there seems to be no reason for pressing it till there is a prospect of settlement with the Algerines. Since the death of the King of Prussia, the symptoms of war between the Porte and the Russians and Venetians have become stronger. I think it is the opinion of this court, however, that there will be no war shortly on the Continent. I judge this as well from other information as from the circumstance of a late reduction of their land force. All their military preparations seems to be against a naval war. Nevertheless, their treaty with England has lately taken a sudden start. Declarations have been exchanged between the negotiators in the nature of preliminaries to a definitive treaty. The particulars of these declarations are not yet certainly known.