"In the course of this pursuit, it happened, one day that Centeno had to pass a deep dell or narrow valley between two mountains, as often happens in that country, the descent to which was about a league from the top to a stream of water in the bottom, yet the hills were so precipitous and close together that their tops hardly exceeded a musquet shot. As Carvajal was well acquainted with this pass, he was confident of catching his enemy at this place as in a trap; believing that while Centeno was descending to the bottom, he should be able to gain the top of the hill, whence he might greatly annoy Centeno and his men while clambering up the opposite hill. Centeno was however fully aware of his danger, and was accordingly very careful to provide against the mischief which he foresaw might occur. He therefore placed six of his best mounted cavalry in ambush near the top of the first mountain, with directions to assail the rear of Carvajal's troops after the van and main body were past, so as to make a diversion and oblige Carvajal to return to succour his people, by which he and his men would be enabled, to get beyond the pass in safety. The ambush accordingly remained concealed until Carvajal and the best part of his troops were gone past; after which they sallied forth, and fell with great resolution on the rear which was marching on in disorder, consisting of a mixed multitude of Indians, Negroes, and straggling Spaniards, with horses mules and other beasts of burden, all in confusion and disorder, among whom they did great execution. Although he heard the noise occasioned by this unexpected assault, Carvajal continued his march for some time, believing it only a false alarm. The six horsemen therefore continued their assault almost unopposed, carrying all before them, and doing incredible mischief. Among the rest they overthrew a loaded mule which carried several quintals of gun-powder, which they blew up with so violent a noise that Carvajal was convinced of the serious nature of the assault, and found it necessary to desist from the pursuit of Centeno, and to return for the protection of his rear. When the six horsemen belonging to Centeno observed the approach of the troops of Carvajal, they immediately fled by cross ways and bye paths, under the guidance of some friendly Indians, and rejoined Centeno six or seven days afterwards. By this successful stratagem Centeno was enabled to escape across the dangerous pass, and even gained considerably in the retreat, as Carvajal was obliged to remain on the top of the first mountain all the rest of that day and the following night. Carvajal was much displeased at being thus foiled by one so much less experienced than he in the art of war, and observed to his officers, that during forty years service in the wars of Italy, where he had seen many fine retreats, accomplished by the king of France, by Antonio de Leyva, Count Pedro de Navarro, Mark Antony Colona, and other famous captains, he had never