Of our progress during the ensuing fortnight it is not necessary that I should speak, for beyond the ordinary incidents of travel no adventures befell us. During this period we went forward steadily and rapidly; and at the end of it we had covered more than three hundred miles, and had come close to where--supposing our rendering of the Aztec map to be correct, and that we had rightly collated it with the dead monk's letter--the mission of Santa Marta had stood three centuries and a half before. There was no possibility that any trace of this mission would be found; but every rock that we came to was most eagerly scrutinized, for on any one of them might we find the King's symbol engraved.
For two or three days we had been travelling through a region very wild and desolate. Far away along the western horizon rose a range of mountains whose bare peaks cut a jagged line along the sky. The country between us and these far-away mountains was made up of many parallel ranges of rocky hills; which ranges were separated by broad, shallow valleys, where cactus and sage-brush covered the dry ground thickly; and the only trees that broke this dreary monotony were pita-palms, the most dismal thing in all created nature to which the name of a tree ever has been given by man. There was no trail, and travelling through this tangle of briers was very difficult. All of Rayburn's skill, which long practice had developed to a high degree, was required to enable us to pick a way through so thorny a wilderness. At times the Indians with their _machetes_, and Dennis with his axe, had to cut a path for us; and despite all our care, our own hands were cut and torn, and the legs of our poor beasts were red with blood.
The deadly dryness of this arid waste added to our discomfort. A strong dry wind blew steadily from the north, building up out of fine dust which was over all the surface of the baked ground little whirl-winds--_remolinos_, as the Mexicans call them--which went dancing down the valleys as though they were ghostly things; and occasionally, when one of these struck us, we were covered with a prickly dust that fairly burned our skins. What water we got was to be had only by digging in the _arroyos_ which traversed the centre of each valley longitudinally; and although this water always was muddy, and had a strongly alkaline taste, it is the only thing that I remember with pleasure in all that weary land. Of animal life there was nothing to be seen, save a-plenty of rattlesnakes; and a few great buzzards which wheeled above us from time to time as though with the intention of keeping track of us until we should fall down and die of thirst and weariness, and they should be able to feast upon us at their ease.