To the cavalier’s anxious inquiries as to the cause of the disaster, he replied, “It is for my sins that it has befallen me, son Sandoval;” for such was the affectionate epithet with which Cortés often addressed his best-beloved and trusty officer. He then explained to him the immediate cause, in the negligence of the treasurer. Further conversation followed, in which the general declared his purpose to forego active hostilities for a few days. “You must take my place,” he continued, “for I am too much crippled at present to discharge my duties. You must watch over the safety of the camps. Give especial heed to Alvarado’s. He is a gallant soldier, I know it well; but I doubt the Mexican hounds may, some hour, take him at disadvantage.”[57] These few words showed the general’s own estimation of his two lieutenants; both equally brave and chivalrous, but the one uniting with these qualities the circumspection so essential to success in perilous enterprises, in which the other was signally deficient. The future conqueror of Guatemala had to gather wisdom, as usual, from the bitter fruits of his own errors. It was under the training of Cortés that he learned to be a soldier. The general, having concluded his instructions, affectionately embraced his lieutenant, and dismissed him to his quarters. It was late in the afternoon when he reached them; but the sun was still lingering above the western hills, and poured his beams wide over the Valley, lighting up the old towers and temples of Tenochtitlan with a mellow radiance, that little harmonized with the dark scenes of strife in which the city had so lately been involved. The tranquillity of the hour, however, was on a sudden broken by the strange sounds of the great drum in the temple of the war-god,--sounds which recalled the _noche triste_, with all its terrible images, to the minds of the Spaniards, for that was the only occasion on which they had ever heard them.[58] They intimated some solemn act of religion within the unhallowed precincts of the _teocalli_; and the soldiers, startled by the mournful vibrations, which might be heard for leagues across the Valley, turned their eyes to the quarter whence they proceeded. They there beheld a long procession winding up the huge sides of the pyramid; for the camp of Alvarado was pitched scarcely a mile from the city, and objects are distinctly visible at a great distance in the transparent atmosphere of the table-land.