The American army pressed on to Jalapa, which made no resistance, and furnished a large amount of supplies, and Puebla, a city of 80,000 inhabitants, was occupied on the 15th of May. There the ground was high and the air cool and salubrious. The men were exhausted from their arduous campaign, and Scott decided to give them a good rest, so as to be fully prepared for the final struggle. Besides it was necessary to receive reinforcements before venturing further. Santa Anna, realizing that the critical period of the struggle was at hand, put forth every energy to collect an army to beat back the invaders. [Illustration: BATTLE OF CERRO GORDO. "Captain Lee led the way, and showed the men just what to do. They lowered the cannons by ropes down the steep cliffs and hauled them up on the opposite hillside."] Early in August the American army had been increased to 11,000 men, and, leaving a small garrison at Puebla, Scott set out for the beautiful city of Mexico. No serious resistance offered until they reached Ayotla, fifteen miles from the capital. There it was found that the regular road bristled with forts, and, although there was no doubt that all could be carried, the American commander wisely decided to move his army around to the south, where he could advance over a comparatively undefended route. Without any difficulty he reached San Augustine, which was within ten miles of the capital. Had the positions been changed, a force ten times as great as the Americans could not have captured the city of Mexico, and yet it fell before a force only one-third as numerous as the defenders. A DAY OF VICTORIES. The fighting began before sunrise, August 20, 1847, and when night came five distinct victories had been won. The fortified camp of Contreras was captured in about fifteen minutes. Shortly after the fortified village of San Antonio was taken by another division of the army. Almost at the same time, a division stormed one of the fortified heights of Churubusco, while still another captured the second height. Seeing the danger of his garrisons, Santa Anna moved out of the city and attacked the Americans. The reserves immediately assailed, drove him back, and chased him to the walls of the capital, into which the whole Mexican force crowded themselves at night. It was in accordance with the nature of Santa Anna that he should set 2,000 convicts loose that night on the promise that they would fight against the Americans. Then he stole out of the city, whose authorities sent a delegation to Scott to treat for peace. This trick had been resorted to so many times by the Mexicans, who never kept faith, that the American commander refused to listen to them. An advance was made, and in a short time the city was completely in our possession. SANTA ANNA.