A truce was signed which denied to either party the right to strengthen its position, or to receive reinforcements during the continuance of the armistices, but authorized General Scott to draw supplies for his army from the city in the meantime.
Negotiations were commenced at once and were kept up vigorously between Mr.Trist and the commissioners appointed on the part of Mexico, until the 2d of September.

At that time Mr.Trist handed in his ultimatum.
Texas was to be given up absolutely by Mexico, and New Mexico and California ceded to the United States for a stipulated sum to be afterwards determined.

I do not suppose Mr.Trist had any discretion whatever in regard to boundaries.

The war was one of conquest, in the interest of an institution, and the probabilities are that private instructions were for the acquisition of territory out of which new States might be carved.

At all events the Mexicans felt so outraged at the terms proposed that they commenced preparations for defence, without giving notice of the termination of the armistice.