The labors of the ensuing summer will close the eastern half of the harbor of Cherbourg, which will contain and protect forty sail of the line. It has from fifty to thirty-five feet of water next to the cones, shallowing gradually to the shore. Between this and Dunkirk, the navigation of the channel will be rendered much safer in the event of a war with England, and invasions on that country become more practicable. The gazettes of France and Leyden, to the present date, accompany this. I have the honor to be, with sentiments of the most perfect respect, Sir, your most obedient, and most humble servant. TO JOHN ADAMS. PARIS, January 11, 1787. DEAR SIR,--Mr. Jay, in his last letter to me, observes they hear nothing further of the treaty with Portugal. I have taken the liberty of telling him that I will write to you on the subject, and that he may expect to hear from you on it, by the present conveyance. The Chevalier del Pinto being at London, I presume he has, or can inform you why it is delayed on their part. I will thank you also for the information he shall give you. There is here an order of priests called the Mathurins, the object of whose institution is, the begging of alms for the redemption of captives. About eighteen months ago, they redeemed three hundred, which cost them about fifteen hundred livres apiece. They have agents residing in the Barbary States, who are constantly employed in searching and contracting for the captives of their nation, and they redeem at a lower price than any other people can. It occurred to me, that their agency might be engaged for our prisoners at Algiers. I have had interviews with them, and the last night, a long one with the General of the order. They offer their services with all the benignity and cordiality possible. The General told me, he could not expect to redeem our prisoners as cheap as their own, but that he would use all the means in his power to do it on the best terms possible, which will be the better, as there shall be the less suspicion that he acts for our public. I told him I would write to you on the subject, and speak to him again. What do you think of employing them, limiting them to a certain price, as three hundred dollars for instance, or any other sum you think proper? He will write immediately to his instruments there, and in two or three months we can know the event. He will deliver them at Marseilles, Cadiz, or where we please, at our expense. The money remaining of the fund destined to the Barbary business, may, I suppose, be drawn on for this object. Write me your opinion, if you please, on this subject, finally, fully and immediately, that, if you approve the proposition, I may enter into arrangements with the General, before my departure to the waters of Aix, which will be about the beginning of February. I have the honor to be, with very sincere esteem and respect, dear Sir, your most obedient, and most humble servant. TO COLONEL FRANKS.