After the president had passed the mountains and pitched his camp on the descent towards the plain, within view of the insurgents, Gonzalo drew up his army in order of battle, and caused some discharges to be made from his cannon and musquetry.  On that day there arose so thick a mist, that the scouts and spies of the two armies often came against each other unexpectedly.  Seeing that the insurgents were disposed to await his attack, or even to give battle, the president was inclined to defer bringing matters to that extremity for some time, in the hope that a considerable number of the enemy might come over to him if they could find an opportunity.  Yet, as the season was exceedingly cold, even accompanied with strong frost, and as wood could not be procured for making fires, and provisions were scarce, it was impossible to remain long in a state of inaction.  The army of Gonzalo was not subject to any of these inconveniencies, having plenty of provisions brought regularly from Cuzco, and being encamped in a comfortable and temperate situation in comparison with the position of the president, whose camp was on the slope of the mountain, while that of the insurgents was in the plain or valley below.  Such is the difference in the temperature of Peru at very inconsiderable distances, that on the mountains a severe cold is experienced, accompanied by frost and snow, while only at eight or ten miles distance in the valley the inhabitants are obliged to use precautions to relieve them from excessive heat.

Gonzalo and his lieutenant-general, Carvajal, had formed an arrangement for a night attack upon the president, intending to have assailed his camp in three points at the same time; but they were induced to abandon this project, in consequence of the desertion of one of their soldiers named Nava, who communicated their intentions to the president.  By this person and some others who had joined him from the army of Gonzalo, the president was advised to delay coming to battle as long as possible; as they were certain that many of the followers of Gonzalo would take the first favourable opportunity of returning to their duty, more especially those soldiers who had served under Centeno, and who had been constrained after his defeat to enter into the ranks of the insurgents to save their lives.  In expectation of the proposed attack, the president kept his army the whole of that night under arms, by which they suffered, much distress from the extreme coldness of the weather on the mountain, so that many of the soldiers were hardly able to keep hold of their arms, and waited impatiently for day.  At daylight, a party of musqueteers belonging to Gonzalo was observed in march to gain possession of a height in the neighbourhood of the royal camp.  Mexia and Palomino were immediately detached, with three hundred musqueteers, to dislodge them, and Valdivia and Alvarado advanced in the same direction, so that the enemy were soon forced to retire.  During this