Five days after the date of Mr. Slidell's note General Herrera yielded the Government to General Paredes without a struggle, and on the 30th of December resigned the Presidency. This revolution was accomplished solely by the army, the people having taken little part in the contest; and thus the supreme power in Mexico passed into the hands of a military leader. Determined to leave no effort untried to effect an amicable adjustment with Mexico, I directed Mr. Slidell to present his credentials to the Government of General Paredes and ask to be officially received by him. There would have been less ground for taking this step had General Paredes come into power by a regular constitutional succession. In that event his administration would have been considered but a mere constitutional continuance of the Government of General Herrera, and the refusal of the latter to receive our minister would have been deemed conclusive unless an intimation had been given by General Paredes of his desire to reverse the decision of his predecessor. But the Government of General Paredes owes its existence to a military revolution, by which the subsisting constitutional authorities had been subverted. The form of government was entirely changed, as well as all the high functionaries by whom it was administered. Under these circumstances, Mr. Slidell, in obedience to my direction, addressed a note to the Mexican minister of foreign relations, under date of the 1st of March last, asking to be received by that Government in the diplomatic character to which he had been appointed. This minister in his reply, under date of the 12th of March, reiterated the arguments of his predecessor, and in terms that may be considered as giving just grounds of offense to the Government and people of the United States denied the application of Mr. Slidell. Nothing therefore remained for our envoy but to demand his passports and return to his own country.