The gorge extended to such a length that I began to be anxious about it, and to fear lest we had entered into a _cul-de-sac_. The perpendicular walls rendered any deviation in our path impossible; above us, the trees crossed their branches and almost hid the sky. No bird enlivened the solitude with its song, and ferns were so abundant that it seemed as if we had lighted upon some corner of the primitive world; as if to render the resemblance more complete, the reptiles scarcely fled at our approach, and obliged us to use the greatest care. Cutlass in hand, Lucien climbed nimbly over the fallen trees which barred our progress. Ere long our feet sank into a quantity of liquid mud, and I discovered a slender streamlet of limpid water oozing out between two rocks. The pass between the rocks became narrower and narrower, and if a wild beast had then met us we should have had to dispute the path with it. As a rencontre of this kind was by no means impossible, Lucien, to his displeasure, was ordered to follow in rear. The way now widened a little, and became more clear of impediments, and our little column advanced with rather more rapidity. We walked along silently between these stern and imposing granite walls, with the constant hope of seeing them separate and open out into a valley. Every few yards some fresh turn frustrated our expectations; and if ever any pass deserved the name of the "Devil's Gorge," it was the interminable fissure through which we had been compelled to walk for so long a distance. At various heights there were half-suspended rocks which threatened to fall upon us; for several previously had fallen and now blocked up the path. At last a sudden turn revealed a wide opening; but our joy was of short duration; nothing but a perpendicular precipice lay in front of us. We looked at one another in consternation; we were prisoners! On our right and left were perpendicular walls more than a hundred feet high, and impossible to climb; before us there was a gulf with a vertical precipice. What was to be done? Sumichrast lighted the pipe of council, while l'Encuerado clung on to the rocks and tried to measure the abyss with his eye. We were seated near a plant with slender branches and heart-shaped leaves tinged with red, concealing here and there a flower of a violet blue. I recognized in it the shrub which produces jalap, and is called by the Indians _tolonpatl_. I called Lucien's attention to it, who soon dug up four or five tap-roots of a pear-like shape. Jalap, which has taken its name from the town of Jalapa, whence it was once forwarded to Vera Cruz, grows naturally on all the mountains of the _Terre-Temperee_. Unfortunately, the Indians destroy the plant by taking away all its turbercles, and the time is not far distant when this drug, so much used in Europe, will, like quinine, become very scarce.