"Yes, I do, a little."

"Well, you are very fortunate! The other day stones were said to come from the sun or moon, and fly about all covered with fire; now, they are formed by water. Perhaps M. Sumichrast will tell us to-morrow that they come from the wind."

The Indian then walked away, quite indignant; we followed him, smiling at his anger, becoming more and more enchanted by the spectacle which met our eyes. Unfortunately, our torches gave a very insufficient light, and the thick smoke rapidly blackened the arches above us. A great polished stone now impeded our passage, and compelled us to crawl. I took the lead, and, passing through a kind of narrow corridor, made my way into a small chamber. I raised a sudden exclamation; for five or six skulls, symmetrically arranged, seemed to glare at me through their empty orbits.

"Oh father!" cried Lucien, "are we in a cemetery?"

"Five or six skulls . . . seemed to glare at me through their empty orbits."

"Yes, my boy; I think this must be a Chichimec burial-place. This nation, which preceded the Toltecs and Aztecs in Mexico, were in the habit of depositing their dead in caverns."

Sumichrast examined a skull which he had picked up; its white and perfect teeth showed that it must have belonged to a man who died young. A few paces farther on five or six more skulls lay on the surface of the ground; they were inclosed in by fine stalactites, and appeared as if they were grinning at us through the bars of a dungeon.

For more than a thousand years, perhaps, these skulls had reposed in the niches which had evidently been hollowed out on purpose for them. The soil of the grotto had apparently risen at a subsequent period. What revelations as to the ancient history of Mexico might be contained in this cave! Without much difficulty, l'Encuerado broke through the upper calcareous layer, and brought to light some loamy earth, out of which he procured a small cup of baked clay. I then began digging; my fingers soon touched some hard object; it was a small stone statuette. I had scarcely loosened my discovery from the earth, before Lucien also plunged his arm into the hole and brought out a little fancifully-shaped tortoise, the tail of which had been used as a whistle. Enticed on by these successes, we knelt down so as to break through a wider extent of the calcareous stratum; but our torches began to burn palely, and the close chamber, now filled with a thick smoke, was no longer bearable. Sumichrast complained of humming in his ears, and I also felt uncomfortable; so, much against our inclination, I gave the signal of departure. The lamp was dying out, and was filling the outer chamber with a nasty smell, which gave the finishing-stroke to our unpleasant feelings. L'Encuerado and Lucien were the first to leave the cave; from it I afterwards emerged with Sumichrast, both being quite blinded, when we reached the open air, by the overpowering rays of the sun.