I passed over one of those arid and desolate plains, bristling with volcanic scoriæ, known by the name of mal pais, upon which a scanty layer of earth allows only a few stunted plants to grow. The wind, blowing in sudden gusts, seemed to moan as it struck the sonorous leaves of the nopal and the clumps of juniper. The wolves also began to howl frequently, and the fog which was falling was so dense and cold that I thought I was long in reaching the watch-fire at which I expected Victoriano to fulfill his promise. However, the fear of losing my way in the fog, which hid the horizon, joined to the roughness of the ground, forced me to slacken my pace, and night had fallen before I arrived at our halting-place—Cruz Blanca. In the small number of houses which composed the village, it was not difficult to find where the conducta had stopped. To my great astonishment, I learned that Victoriano had not made his appearance. This circumstance had alarmed every body. Some accident of a serious nature must have happened to prevent a man, whose habitual punctuality was well known, from rejoining the cavalcade, and every one was lost in conjectures as to his absence, when a stranger presented himself, and requested to speak with the chief arriero. The new-comer was dressed in a well-worn stable-coat, and an apron such as is generally worn by mule conductors. He told us that Victoriano, whose horse had come down, had been much injured by the fall, and that they had conveyed him to Perote, where the utmost care would be taken of him. The unknown added that it was by his express desire that he had come to supply his place till he should be in a fit state to rejoin the convoy. The chief arriero, who had only the number of men strictly necessary, accepted his offer perhaps a little too inconsiderately. The new-comer was a stout fellow of about the same age as Victoriano, but the sinister expression of his countenance did not inspire me with the same feeling of confidence as the arriero.

The next morning we resumed our march, intending to pass the night at Hoya, a little village about five leagues from Cruz Blanca. The journey, though slow as ever, seemed more fatiguing, as Victoriano was not there to enliven it with his stories. Every thing seemed to go wrong after his departure. On arriving at Barranca Honda, about a league from where we had started in the morning, a mule cast its shoe, then a second, and afterward a third. Very long halts were necessary for re-shoeing the animals. Victoriano's substitute acquitted himself as a farrier with great zeal and intelligence, to the great delight of the arriero, who continued, however, to discharge as many oaths as there were saints in the calendar. For my part, I must say that I could not look upon our new companion with the same satisfaction as the muleteer.

"Does it not seem to you," said I to Don Blas, "that this fellow, who shoes the mules so cleverly, might not show an equal address in unshoeing them?"

The captain looked on my suspicions as ridiculous. "I am perfectly disinterested in the matter," I replied, "for, fortunately, none of the precious boxes belong to me; but I can't help regretting the absence of Victoriano."

The convoy put itself again in motion. Still, although it was necessary that the pace should be quickened, the mules appeared to have lost all their former energy, as if some enervating drug had been mixed with their food. Just when we were passing through Las Vigas, the arriero held a sort of conference with the chief of the escort. The former advised that we should pass the night in the village; Don Blas, however, thought it would be better to push on to Hoya, alleging that a delay in a convoy so soon expected in Vera Cruz, especially when the stages in advance were well known, would tend to spread a prejudicial uneasiness. Unluckily for the muleteer, this advice prevailed, and we resolved to push on to Hoya.

There is, perhaps, no part of Mexico in which the difference between the temperature of the plains and that of the more elevated regions is more keenly felt than in the approaches to the Vigas. A few seconds before reaching the village, you were in an instant transported into the vegetation peculiar to cold climates. There the warm breeze and blue heavens were gone, and in their stead a cold north wind blew sharply through the icy vapor which floated around us. Our eyes met only a dull sky, and an arid soil torn up and thickly covered with volcanic boulders. The fog, which at first crept along the surface of the ground, and rolled about in volumes like dust under the feet of our horses, was not long in mounting aloft, and hiding from our view the tops of the tall pines. We could scarcely distinguish one another in the dense mist which the icy wind was driving right in our faces. Deep ravines ran parallel with the road, which was of volcanic formation, and it was a difficult matter to prevent the mules from straggling in a path so hard to follow. I could not help admiring the calmness of Don Blas, the great importance of whose trust absolutely frightened me. As for the arriero, he was in great perplexity, and he galloped incessantly up and down the whole length of the convoy, the sparks flying from his mule's feet at every stroke. The poor man inspired me with a lively interest, for every thing he had in life was at stake; an immense responsibility rested upon him, and he counted and recounted his mules every minute with an anxiety painful to behold. When night had fully come on, Don Blas divided his escort into two bodies. With one he rode at the head of the convoy, and left the other under the charge of Juanito, his ex-asistente. The march was gloomy and silent, the chief noise heard being the tinkle of the bell of the leading mule, the songs of the soldiers, and the clattering of the mules' feet on the stony road. Riding alone on the flank of the convoy, I passed through my mind the various incidents of the morning; the disappearance of our favorite, the unshoeing of the mules, and the dull listlessness with which they now marched, appeared to me, in the midst of the fog which enveloped us, alarming in the highest degree. At the very moment I was asking myself if some treachery was not at work around us, I was joined by my valet Cecilio.

"Señor," said Cecilio, in a low voice, "if you will believe me, we ought not to stay here a moment longer. Something strange is going to happen."

"And where are we to go," said I, "when we can not see two paces before us among these rocks and ravines? But what is the matter?"

"The matter is, señor, that Victoriano has just slipped in among us, and perhaps I am the only one that has remarked his presence; but his coming bodes no good. The story of his accident appears to be only a falsehood."

"Are you sure of it?"