At length we reached the great temple, into which four thousand of the Mexicans immediately rushed, independent of other large bodies who were previously stationed there for its defence.  They defended their temple with the most obstinate valour, and for some time prevented us from being able to ascend, our turrets, musketry, and cavalry, being of no avail to force them to give ground.  The pavements of the temple courts were so smooth, that the horses fell when our cavalry attempted to charge.  They opposed us in front from the steps of the great temple, and assailed us with such fury on both flanks and in the rear, that though our guns swept off a dozen or fifteen of them at every discharge, and though in each charge of our infantry we killed many of them with our swords and lances, they continually filled up the chasms we had made among them, and their numbers and resolution were so great that we could not make any permanent or effectual impression.  We were even forced to abandon our mantas or turrets, which the enemy had demolished.  At length, by a desperate effort, we forced our way up the steps, and in this assault Cortes shewed himself a hero.  Our battle in this place was most desperate, every man among us being covered with blood, and above forty of our number lay dead on the spot.  We reached with infinite difficulty the place where we had formerly set up the image of the blessed Virgin, which was not to be found, as it had been removed by order of Montezuma, either through fear or from devotion to his idols.  We set fire to the buildings, and burnt down a part of the temples of Huitzilopochtli and Tezcatlipoca; and while some of us were employed in setting fire to the buildings, and others fighting, in which our Tlascalan allies seconded us most gallantly, above three thousand Mexican nobles, headed by their priests, made a most severe attack, and drove us down eight or ten of the steps.  Others of the enemy from the corridors, or within the railings and concavities of the temple, assailed us on every side with arrows and other missiles, so that we were unable even to maintain the ground we had gained.  We were constrained therefore to retreat, every man of us being wounded, and forty-six of our number slain.  We regained our quarters with the utmost difficulty, which the enemy had almost gained possession of, as they had been continually endeavouring to carry them by assault during our absence, or to set them on fire.  But they desisted in a great measure from the assault on our arrival, yet continued to throw in perpetual showers of arrows, darts, and stones.  In the course of this most terrible engagement, we made two of the chief priests prisoners, whom we carried along with us to our quarters.  I have often seen representations of this battle in Mexican paintings, both at Mexico and Tlascala, in which the various incidents were represented in a very lively manner.  Our ascent to the great temple; the setting the temple on fire; the numerous warriors defending it in the corridors, from behind the rails, and in the concavities, and others on the plain ground, in the courts of the temple, and on all sides of us; many of our men being represented as dead, and all of us covered with wounds.  In these paintings, the destruction of our turrets is conspicuously represented as a most heroic achievement.