The original treaty with Turkey is a curious document. It consists of a number of long slips of parchment, covered with columns of Turkish characters. Near by it hangs a bag, in which it was conveyed to this country. The bag is its legal covering, or case, and is provided with a huge ball of red wax, by way of a seal. Next to it is the first treaty of alliance with France—the famous one of 1778—which gave the aid of the French king to the cause of the suffering and struggling States of the new republic. It is signed by the unfortunate Louis XVI. The “Louis” is written in a round, phlegmatic hand; but the lines are delicate, as if the pen did not press the paper with the firmness of a strong will. The French treaty, of 1822, bears the autograph of Louis XVIII.; and that of 1831, the signature of Louis Phillippe. Don Pedro I., Emperor of Brazil, has affixed his hand to the Brazilian treaty, and the name of Ferdinand (the last, and least) is affixed to that of Spain. In the glass cases with the treaties are several Oriental articles,—a Persian carpet and horse-cover, presented to President Van Buren, by the Imän of Muscat; and two magnificent rifles, presented to President Jefferson, by the Emperor of Morocco. These rifles are finished in the highest style of Eastern art, and are really beautiful. In the same cases are collections of medals, some of European sovereigns, and others of American celebrities. Among them is a copy of the medal, awarded by Congress, to the captors of Major André. Near these are several splendid Eastern sabres, presented by the great Ali Pacha, the Bey of Egypt, to Captain Perry and the officers of the U. S. ship-of-war, _Concord_, at Alexandria, (Egypt,) in 1832.