This is a subject, which deserves the serious consideration of every American. British manufactures are going in vast quantities to America, from Holland, the Austrian Flanders, France, and Sweden, as well as by the way of New York and Charleston, &c. Whether it is possible to check it, much less to put a stop to it, I know not; and whether it would be good policy to put an end to it, if that were practicable, is made a question by many. If the Germans, the Dutch, the French, and Spaniards, or any other nations, would learn a little commercial policy, and give a credit to Americans, as the British merchants do, and encourage in their own countries manufactures, adapted to the wants and tastes of our countrymen, it is certain that in such a case, it would be our interest and duty to put an end to the trade in British goods, because nothing would weaken and distress the enemy so much, and therefore nothing would contribute more to bring the war to a conclusion. At present manufactures flourish in England, and the duties paid at the custom houses have been increasing these two or three years, merely owing to their recovering more and more of the American trade by neutral bottoms, and by other clandestine channels. Any American merchant by going over to London, obtains a credit. The language of the London merchants to the American merchants is, "Let us understand one another, and let the governments squabble." But Americans ought to consider, if we can carry on the war forever, our allies cannot, and without their assistance we should find it very difficult to do it. I wish the taste for British manufactures may not cost us more blood, than the difference between them and others is worth. I have the honor to be, &c. JOHN ADAMS. * * * * * TO THE PRESIDENT OF CONGRESS. Amsterdam, June 26th, 1781. Sir, The rubicon is passed. A step has been at last taken by the Regency of Amsterdam, which must decide the fate of the Republic. The city of Amsterdam, finding that their proposition of the 18th of last month was not sufficient to change the conduct of administration, have ventured on another manoeuvre. On the 8th of this month, as soon as the States of Holland were separated, two Burgomasters of Amsterdam, M. Tenminck and M. Rendorp, accompanied with M. Vesser, the Pensionary of the city, demanded an audience of the Prince Stadtholder, who granted it, at his house in the grove. In this audience, they made to the Prince, by word of mouth, a representation, which they repeated in a memorial sent on the 14th, to the Counsellor Pensionary of the Province, the substance of which is as follows. The gentlemen of Amsterdam, said,