AUTHENTIC.SECOND CONGRESS.THEĀ®|j|jlTED SPATES.At the fir ft Seflion,begun and held at the city of Philadelphia, in the State of Pennfylvania, on Monday the twenty-fourth of October, one thoufand ieven hundred and ninety-one.An ACT to provide for a Copper Coinage.E it enabled by the Senate and Hovfej!3 of Reprefentcdivek of the United Statesof America in Congre/s ajfeijiblcd, That thedireor of the mint, with the approbation or the Prefident.of the United States, he authorized to contract for and purcbafe a quantity of copper, not exceeding one hundred and fifty tons, and that the faid direor, as foon as th? needful prepara-I iubfeibe heartily to your with, thata ferics of obfervations might be made at St. Peterfburgh. concerning the tide-wa-ters ; and the fame idea was, a year ago, already an objedi of debate in our academy,though not in the fame view.Vineta, on the coaft of Pomerania,was, focne centuries ago, one ot the moil flourifhing mercantile towns in Germany ; at prefent its ruins which are not feldomto be feen under water, are the ruin cf many a fhip. It is univerfally believed,that the fame revolution, by which Vineta j was overwhelmed, levered alfo, the Ifle of j Rugen from the German continent, ot which it was, till that time, the northern-\ moft point.The author of that memoir, in the Memoir es de Pacademie royale dcs Sciences de I Berlin, is the famous Leonard Euler, father to him who is now fecretary to ouracademy.T b p rnnv nf vnnr increniousworkvon