Indiana State Sentinel

New Orleans papers of the 13th publish further important Mexican documents, among which are two circulars, bearing date on the 9th and 17th of July, from Puebla, the new Mexican Minister of Foreign Affairs, to the Governors of the different States, which are considered by the Picayune as the latest and best exposition of Santa Anna's views.

The first abounds in fulsome panegyrics of Santa Anna, and declaring his whole antecedent life a continued scene of glory; and that his name is indissolubly connected with the history of this war. It denies that he has any understanding with the Americans or any plan of preparations for making peace; but that he is listening only to the dictates of the peace party, and the wishes of the Legislatures and Governors of States, before encountering the enemy—that they may all have their share of the honors of a victory.

The second circular intimates that the whole civilized world is favorable to the side of Mexico; and that an almost equally general opinion in her favor prevails in the United States; that our army cannot triumph, except by intrigue and dissensions among the different portions of the Mexican Republic; that her Britannic Majesty's Government still maintains friendly relations with Mexico; that they are pledged not to recognize any revolutionary government, but only that legitimately established when a President is named; and that should the chances of war compel the government to leave the capital, letters from Lord Palmerston, which accompany the document, assure the Mexican government that the English resident minister will consider it his duty to follow the government, and maintain friendly relations with it, whatever part of the Mexican territory the said government may fix upon for its residence.

By way of Havana, the N. O. Picayune has accounts from Mexico, which although no later as regards dates, is highly important so far as the question of peace is concerned. The news was brought by the "Mary Kingsland."

The Mexican Secretary of foreign affairs transmitted a communication to Congress, urging that body to assume the responsibility of answering Buchanan's despatch,—a responsibility which he declined. Neither was Santa Anna willing to take that responsibility. The Executive did not consult Congress to know whether he could take the initiative in making propositions for peace, but desired to know if Congress wished him to entertain the overtures proffered by the United States government.

The dignity of the Mexican nation required some answer to Buchanan's letter. The Executive did not undertake to make that reply, but desired to make such answer as would expose the views of Congress.

In conclusion, the Secretary says that the MEXICAN GOVERNMENT IS PREPARED FOR WAR, AND CONFIDENT OF A TRIUMPHAL DEFENCE OF THEIR CAPITAL:—but "as to the prelude, God only can determine."

The Mexican Executive insists that Congress shall make express declaration whether the Mexican nation shall listen to any proposition from the United States.

The action of Congress upon this communication is not known.

The N. O. Bulletin publishes a letter from Jalapa, bearing date of the 3d of August, the writer of which says he has seen the Diario del Gobierno. (the Government journal) published at the Capital on the 31st of July. The official editor of that journal holds that though peace may in due course be concluded on some proper basis, he is of the opinion THAT PEACE CAN NEVER BE MADE WITH THE UNITED STATES UNTIL THE MEXICAN ARMY IS VICTORIOUS.

The official editor also strongly favors the REMOVAL OF THE SEAT OF GOVERNMENT.

Santa Anna is violently opposed to the removal of the seat of government, from which some infer that he is scheming to make the fate of the capital produce a crisis in Mexican affairs. If the capital falls, it is thought by those who hold these opinions that Santa Anna will favor peace. Should it result that the capital is successfully defended, and Gen. Scott's army overwhelmed, (and the Mexicans entertain great hopes of totally destroying the American army in the great battle which is to be fought before the capital,) the power and influence of Santa Anna will be immeasurably increased.

The N. O. Bulletin understands that a division of the Mexican army has been withdrawn from the capital to operate near Vera Cruz, in cutting off entirely, the communications of the American army. The same paper mentions that extensive preparations are making to harass the trains, which left Vera Cruz on the 6th, with supplies for the American army.

The N. O. Delta, has a letter from Monterey, dated on the 27th of July, which says that all departments connected with Gen. Taylor's forces, were actively preparing for a movement on San Luis Potosi, on the 1st of September, the time designated for the intended movement against that city.