It has long been one object of my policy to engage the King of Prussia to act in our favor as a mediator for peace, whereby, if his mediation was agreed to, he might render us much more effectual service than by sending an army of fifty thousand men into Hanover, which step he could not take without arming the Emperor and the whole German empire against him. I have good reason to believe, that the King is much disposed to act in the quality of a mediator, but he is too wise to offer his services without being previously assured, that they would be accepted by both sides; however, we may expect very essential benefits from his influence with the Court of St Petersburg, who, it is said with confidence, has offered its mediation, and that it is accepted by the parties. I am informed, that the first proposition to be made to England by the mediating powers, as the commencement of the negotiation, is that America shall be treated as independent.[59] There is a strong inclination in Prussia to enter into the American commerce, and there is now a scheme in agitation under the direction of the Minister to make the trial, which, if the commencement is successful, will be carried on upon a very large scale, and will more effectually engage the King in our interests than any thing else. For this purpose, I think it would be of most essential service if two or three American vessels were to enter into the port of Emden, which is a good harbor, lying between Hamburgh and Amsterdam, and as easily got into as any of the ports of Holland. I have continued my correspondence at Vienna, but having no powers to treat with the Empress Queen, who is still sole sovereign over all the dominions of the House of Austria, and the Emperor being much disgusted with some proceedings during the late war, and more so with its conclusion, is become of course much more disposed in favor of our enemies than he was, and consequently less inclined to serve us; therefore, little advantage can be expected from that quarter at present. Our friends in Holland increase every day, and I am still in regular correspondence with those who regulated with me the form of the treaty of commerce, copies of which have been sent you by various conveyances, and even now if the Stadtholder were to refuse to receive an American deputy, I have no doubt of his meeting a cordial reception from the city of Amsterdam, whose weight and decisive influence in their association you must be fully informed of.