SIR,--My last letters to you were of the 6th and 15th of August; since which, I have been honored with yours of July the 24th, acknowledging the receipt of mine of the 14th and 23d of February. I am anxious to hear you have received that also of May the 4th, written from Marseilles. According to the desires of Congress, expressed in their vote confirming the appointments of Francisco, Giuseppa and Girolamo Chiappi, their agents in Morocco, I have written letters to these gentlemen, to begin a correspondence with them. To the first, I have inclosed the ratification of the treaty with the Emperor of Morocco, and shall send it either by our agent at Marseilles, who is now here, or by the Count Daranda, who sets out for Madrid in a few days, having relinquished his embassy here. I shall proceed on the redemption of our captives at Algiers, as soon as the commissioners of the treasury shall enable me, by placing the money necessary, under my orders. The prisoners redeemed by the religious order of Mathurins, cost about four hundred dollars each, and the General of the order told me, that they had never been able to redeem foreigners on so good terms as their own countrymen. Supposing that their redemption, clothing, feeding and transportation, should amount to five hundred dollars each, there must be, at least, a sum of ten thousand dollars set apart for this purpose. Till this is done, I shall take no other step than the preparatory one, of destroying at Algiers all idea of our intending to redeem the prisoners. This, the General of the Mathurins told me, was indispensably necessary, and that it must not, on any account, transpire, that the public would interest themselves for their redemption. This was rendered the more necessary, by the declaration of the Dey to the Spanish consul, that he should hold him responsible, at the Spanish price, for our prisoners, even for such as should die. Three of them have died of the plague. By authorizing me to redeem at the prices _usually_ paid by the European nations, Congress, I suppose, could not mean the Spanish price, which is not only unusual, but unprecedented, and would make our vessels the first object with those pirates. I shall pay no attention, therefore, to the Spanish price, unless further instructed. Hard as it may seem, I should think it necessary not to let it be known even to the relations of the captives, that we mean to redeem them. I have the honor to enclose you a paper from the admiralty of Guadaloupe, sent to me as a matter of form, and to be lodged, I suppose, with our marine records. I enclose, also, a copy of a letter from the Count de Florida Blanca to Mr. Carmichael, by which you will perceive, they have referred the settlement of the claim of South Carolina for the use of their frigate, to Mr. Gardoqui, and to the Delegates of South Carolina in Congress.