ARTICLE XII
The present treaty shall be duly ratified, and the mutual exchange of ratification shall take place in London, within six months from the date hereof, or earlier if possible.
In faith whereof we, the respective Plenipotentiaries, have signed this treaty and have hereunto affixed our seals.
Done, in duplicate, at Washington, the ninth day of August, anno Domini one thousand eight hundred and forty-two.
DANL. WEBSTER (L. S.)
ASHBURTON(L. S.)