"For the first mile, the way was very pleasant over a nearly level plain, at the termination of which there were stronger indications of rougher riding, for we soon began to descend a nearly perpendicular precipice, the only pass, down which was a narrow mule-way, where, step by step, these animals had worn a passage, over rocks, loose stones, sand and mud. We at length reached the bottom of the ravine, and, crossing a brook, which in some parts was a wide and deep chasm, we commenced a toilsome ascent on the opposite side, over a similar pathway, surrounded by scenery of wild and unknown plants and trees, on the mountain and glen, through whose dense foliage a breath could scarcely penetrate. The fervent atmosphere produced an almost stifling sensation, while the deathlike silence that reigned throughout, disturbed only by the audible footfall of our animals, as we slowly wound around the tortuous ascent, made the journey peculiarly toilsome and solitary. [Illustration: SONORIANS DRY-WASHING GOLD.] "For the first few miles I followed closely at the heels of our guide, and would often pause and turn to examine the apparently almost impassable route I had traversed, watch the progress of the rest of the party, and wonder at the security with which their cautiously-stepping and sagacious animals would gradually overcome seemingly insurmountable obstacles. These mustangs and mules, early trained to travel 'in the wild mountain track,' are capable of great endurance, and certainly possess much more knowledge than most of their riders, when exercised upon what they consider the safest and surest stepping-place, and best mode of proceeding. I urged mine repeatedly, to make him choose a path, which to all appearance was preferable to his own, but to no purpose. He would turn half round, and in a slow, solemn way, put his nose to the ground, and looking keenly about the place, would cautiously put one foot forward, then another, then a third and a fourth, when, poised on all drawn under him, and close together, he would have a better opportunity for further inspection, which having satisfactorily accomplished, another equally deliberate and cautious step would be made as before, down what, to all appearance, was an impracticable route, and so on, until the difficulty was overcome. Finding that he knew so much better than I did, how, where, and when he ought to travel, I invariably threw the reins to him, when hazardous passes or other obstacles were to be surmounted. The result was always fortunate. One or two of the party, however, were satisfied that 'horses should not have their own way,' and whipped and spurred theirs to such an extent, to compel compliance with their better judgment, that the issue was as I had anticipated. One was thrown over his horse's head into a mud puddle, and the other, with horse and all, stuck fast in a quagmire, from which it was not easy to extricate him. Should these lines ever meet the eye of those