obliged to keep a very careful guard, as the Mexicans sent frequent parties to endeavour to set them on fire. The Tlascalan chiefs were very anxious to be employed on some enterprize against their ancient enemies the Mexicans, and Cortes resolved to indulge them by an expedition against Xaltocan, a town situated on an island of a lake to the northward of the great lake of Mexico or Tezcuco, which is now called the lake of St Christopher. Leaving therefore the charge of the important post of Tezcuco with Sandoval, who was enjoined to use the utmost vigilance, and giving orders to Martin Lopez to have the vessels all ready for launching in fifteen days, he set out on the expedition against Xaltocan with 250 Spanish infantry, 30 cavalry, the whole force of the Tlascalans, and a body of warriors belonging to Tezcuco[7]. On approaching Xaltocan, our army was met by some large bodies of Mexican troops, whom the cavalry soon dispersed and drove into the woods. The troops halted for the night in some villages in a very populous country, and were obliged to keep on the alert, as it was known that the enemy had a strong force in Xaltocan, to which place a strong body of Mexicans had been sent in large canoes, and were now concealed among the deep canals in that neighbourhood. Next morning, on resuming their march, our troops were exceedingly harassed by the enemy, and several of them wounded, as our cavalry had no opportunity to charge them, the ground being much intersected by canals. The only causeway which led from the land to the town had been laid under water, so that our troops could not approach, and our musquetry had little or no effect against the enemy in the canoes, as they were defended by strong screens of timber. Our people began to despair of success, when some of the natives of Tezcuco pointed out a ford with which they were acquainted, by which our people were enabled, under their guidance, to make their way to the causeway leading into the town leaving Cortes and the cavalry on the main land. Our infantry forced their way into the town, where they made a considerable slaughter of the Mexicans, driving the remainder of them and many of the inhabitants of the town to take shelter in their canoes. They then returned to Cortes, bringing with them a considerable booty in gold, slaves, and mantles, having only lost one soldier in this exploit. Next day, Cortes marched through a thickly peopled and well cultivated country against a large town named Quauhtitlan, which we found deserted, and in which we halted for the night. On the ensuing day, we marched to another large town called Tenayoecan, but which we named _Villa de Serpe_, or the Town of Serpents, on account of some enormous figures of these animals which were found in the temples, and which these people worshipped as gods. This place was likewise deserted by the inhabitants, who had withdrawn with their effects into places of safety. From thence we marched to Escapuzalco, or the town