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For the purchase of five acres of land adjoining the arsenal at Watertown, Massachusetts, five hundred dollars.

For the erection of a military laboratory and workshop at West Point, two thousand five hundred dollars.

For the purchase of a lithographic press, of paper and ink, and for the employment of a suitable lithographer for the War Department, six hundred dollars.

For barracks at Fort Gratiot, five thousand dollars.

For the security of the Pea Patch island; for the construction of a new water-tank; and for gravelling the parade at fort Delaware, forty-one thousand three hundred and twenty-one dollars and fourteen cents.

, May 31, 1830.

Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That the unexpended balance of the sum of thirty thousand dollars, appropriated by the act, entitled “,” approved May twenty-fourth, one thousand eight hundred and twenty-eight, be re-appropriated to the same object, pursuant to the.

, May 31, 1830.

Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That, from and after the first day of April next, no duties upon the tonnage of the ships and vessels of the United States, of which the officers and two thirds of the crew shall be citizens of the United States, shall be levied and collected; and all acts and parts of acts imposing duties upon the tonnage of ships and vessels of the United States officered and manned as aforesaid, so far as the same relate to the imposition of such duties, shall, from and after said first day of April next, be repealed.

. And be it further enacted, That, from and after the said first day of April next, all acts and parts of acts imposing duties upon the tonnage of the ships and vessels of any foreign nation, so far as the same relate to the imposition of such duties, shall be repealed: Provided, That the President of the United States shall be satisfied that the discriminating or countervailing duties of such foreign nation, so far as they operate to the disadvantage of the United States, have been abolished.

, May 31, 1830.

Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That the President of the United States be authorized, and he is hereby authorized, to cause