On one occasion during this march, Cortes left the main body with ten of the cavalry, among which were four of his grooms, to lay an ambuscade for the Mexicans, who every now and then came suddenly upon us from the inlets of the lake. Cortes attacked and routed a body of Mexicans, who, after a short stand, fled with precipitation, and were pursued by our general; in doing which he fell himself into a more terrible ambush, from which the enemy suddenly burst upon him, and wounded two of his men; and he, with all those who accompanied him, would undoubtedly have been killed or taken prisoners if he had not instantly retreated. The enemy, however, succeeded in capturing two of his grooms, who were brought before Quauhtemoctzin, and afterwards sacrificed to his gods. The main body of our army had, in the meantime, arrived with flying colours in Tlacupa, while only Cortes, with the ten horse, remained behind, and we began to fear that some misfortune had befallen him; wherefore Alvarado, Oli, and Tapia immediately turned back with a strong body of horse in the direction we had seen him take. They soon came up with the two grooms who had escaped from the enemy, and who related how they had been indebted for their lives to a precipitate retreat; and that Cortes was following behind, as he was obliged to ride at a gentle pace, his horse having been wounded. It was not long before our general came up, to the great joy of all; but he appeared excessively grieved at the loss of his two grooms, almost to shedding tears. Just as Cortes entered Tlacupa, it began to rain very fast; for which reason we rested here for a couple of hours in a large square of the town. Our general, with several other officers, the treasurer Alderete, (who fell ill here,) father Melgarejo, and several soldiers, including myself, ascended to the top of the great temple of this town, from which we beheld the neighbouring city of Mexico, with the numerous other towns which stood in the lake. When father Melgarejo and Alderete beheld all this splendour at once, they could scarcely find words to express their astonishment; but when they contemplated the great city of Mexico more minutely, and saw the numerous canoes hurrying up and down this immense lake laden with merchandize or provisions for the city, or occupied in fishing, they were actually terrified, and exclaimed to each other that our arrival in New Spain could not be by the power of man alone, and that it was through the great mercy of Providence that our lives were still preserved. They had once before remarked, said they, that no monarch had ever been rendered such signal services by his subjects as we had rendered to our emperor; but now they were more convinced than ever, and would duly inform his majesty of what they had seen.