By ten o'clock in the morning we had crossed some rising ground, and were passing through a narrow gorge carpeted with ferns. Lucien headed the party, closely followed by l'Encuerado; and led us on to a kind of rocky staircase, down which, in the rainy season, water doubtlessly flowed. This steep path compelled us to halt several times to recover our breath. The branches of the bushes formed an archway over our heads, and their blossoms surrounded us with their rich perfume.

At length a rise in the ground impeded our path, and the heat commenced to inconvenience us. The refraction of light, especially, affected our eyes, and our feet raised perfect clouds of dust. Lucien, who had become quite an enduring walker, throughout kept in front, and often gained ground while we were stopping to take breath. Just as we reached the ridge of the hill, I saw the boy, who was a few yards in advance, suddenly cock his gun and fire. I ran to him, but he disappeared down the slope, crying out to me that he had shot a dragon!

I soon came up, and found the young sportsman standing in front of a magnificent black iguana—Cyclura acanthura—which does, in fact, somewhat resemble the supposed appearance of the fabulous animal described by the ancients. Its skin shone with a silvery-gray metallic glitter, more particularly on the dorsal ridge. L'Encuerado joined us when it was dying, when, rubbing his hands, he cried:

"It is a guachi-chevÉ; what a splendid supper we shall have!"

"You have seen them before, then?"

"It is an animal which belongs to my country, Chanito; it abounds in the plains which slope down to the Pacific Ocean. They are beasts which can live without eating; they are sometimes kept for two months with their feet tied and their mouth sewn up."

"The mouth sewn up?"

"Yes, Chanito, so as to prevent them getting lean. When I was your age, during the time of Lent, I used to go iguana hunting with my brothers. We sought them in the shallow marshes which are inundated by water during flood-time. There, in hollow trunks of trees, or in holes made in the mud, we found the black iguanas, and pulled them out by their tails."

"Then they don't bite?"

"Oh yes, they do, and scratch also; so we took care to catch hold of them by the neck, and tie both their feet and their jaws. Sometimes we used to pursue them up the trees; but then, for they don't mind falling twenty or thirty feet, they frequently escaped."

Sumichrast completed this information by telling the young naturalist that the iguana, which is allied to the lizards, is generally a yard in length; and that the female lays thirty to forty eggs, which are much esteemed by the native epicures; also that the green species—Iguana rhinolopha—has a flat, thin tail, and swims much better than the black variety, the tail of which, being covered with spines, is not well adapted for progression through water. Thus, meeting with a green iguana almost always indicates the vicinity of a stream; but the black species is frequently found away from rivers.

Lucien wanted at first to carry his game, but he was overtaxed by its weight and gave it up to l'Encuerado. Another hill was now before us, and the ground became at every step more and more barren, and on which there was little or nothing growing but a few shrubs with a bluish flower. When we had reached the summit of this second ridge, a boundless plain lay spread out before our gaze; we were now on the central plateau of Mexico, in the Terre-Froide, eight thousand seven hundred feet above the level of the sea.

What a change there was! The white soil was so light and dry that it was carried away by the breeze, and produced nothing but a few leafless trees. There were also some thorny bushes smothered in sand, and, a little farther on, some gigantic cacti astonished us with their strange shapes. The sun, reflected by the red glaring surface, much interfered with our sight, so we directed our steps to the right, where there appeared to be a greater amount of shade.

"Oh, what a wretched country!" cried Lucien. "Can we be still in Mexico?"

"Yes," replied I; "but we are now on the great plateau, almost on a level with the city of Mexico and Puebla."

"Are we going to cross that great plain? I can see neither birds nor beasts on it; in fact, one might almost fancy the very trees were thirsty."

"You are right, for it does not often rain here. Nevertheless, this ground, which at first sight appears so barren, is very fruitful when cultivated. It produces wheat, barley, potatoes, apples, pears, cherries, grapes, peaches, and, in short, all the European fruits, which can only grow in a temperate zone. On this plateau, too, grows the Maguey agave, Mexicana, a wonderful plant, which is as useful to the Mexicans as the cocoa-nut tree is to the inhabitants of the lands to which it is indigenous."

L'Encuerado had stooped down under a pepper-tree, and his glance wandered over the scene. The fact was, that we were now about the same height as that at which his own country is situated, and he might easily fancy himself near his native village.

"What are you thinking of?" said I, tapping him on the shoulder.

"Oh Tatita! why did you disturb me? Here I feel myself almost as learned as you, and I could tell you all the names of those flowers which turn their bright faces towards me as if they knew me! It seems as if I had often walked on that plain, and as if I had often seen these trees, bushes, and plants— You are laughing at me, Chanito; it's all very well, but you'll see! Tatita will set me right if I tell you any thing that is not true. Look here, for instance," continued the Indian, rising up and plucking a plant with slender and whitish stems; "this is the alfilerillo, which mothers give their children to cure them of sore throats. Such shrubs are lost here; for their fruit would be useful in my country. Here too, Chanito, is a mizquitl, a thorny tree on which we shall be certain to find some gum. Indeed, here are three morsels of it. You may safely suck it; it will not seem very nice at first, but you will soon like it. Oh Tatita! you have really brought me back into my own country."

"We are certainly on the same line, and it is not to be wondered at that you find here the same kind of vegetation as in that in which you spent your childhood."

The Indian was silent, and seemed musing. Sumichrast and I observed him with some curiosity, and Lucien, surprised at his emotion, looked at him anxiously.

"Here is the 'angel-plant,'" resumed l'Encuerado, suddenly. "How pleased my mother used to be when I found one of them."

"What are its good properties?" I asked.

"Oh! it produces beautiful dreams, which seem to lift you to heaven."

The Indian again became pensive, sometimes casting a glance over the vast prospect, and sometimes pulling up pieces of the turf which grew at his feet.

"It only needs a palm-tree to make the landscape quite complete," said he, thoughtfully.

In a minute or so he advanced towards the bushes, and, kneeling down, plucked a tuft of yellow marigold, which are called in this country "the dead man's flower." Afterwards I heard him sobbing.

"Oh ChÉma! what is the matter?" cried Lucien, running up to his friend.

The Indian raised himself and took the boy in his arms.

"Once I had a mother, brothers, and a country," he said, sadly; "and this flower reminds me that all those are now sleeping in the grave."

"Then you don't love me?" replied Lucien, embracing him.

The only answer l'Encuerado made was pressing the boy so tightly against his breast as to draw from him a slight cry.

This scene quite affected us, and I and my friend, side by side, walked back to the hut deeply sunk in thought.

Hunger soon brought with it more commonplace ideas. The white and juicy flesh of the iguana was quite a feast for us all. Our meal we sat over a longer time than usual; for in conversation we entered upon the subject of our native countries, and the theme appeared inexhaustible. I reminded my friend that, only a few days before, he had shown as much emotion as the Indian on seeing two butterflies which he fancied belonged to a Swiss species; and I brought forward these feelings to oppose the intention he so often expressed of taking up his abode in the midst of the wilderness, so as to live and die in solitude.

On the great plateau the sun shines rather later than in the lower regions. As the luminary approached the earth, the sky was lighted up with a purple color, and I saw standing out on our left in bold relief the jagged outline of the Cordilleras of l'Encuerado's country. The whitish ground gradually assumed a transparent appearance; our eyes deceived us to such an extent that we fancied we saw an immense tract of water, above which the trees, appearing as if they were submerged, raised their green heads.

The moon rose, and, far from destroying the mirage, it rendered the illusion still more striking. I resolved to descend from the hill in order to convince Lucien how much our vision was deceived.

"There is no mistake about the plain being dry," said he, as we returned to the bivouac, "and yet one might fancy that, as we were mounting the hill, the water was rising behind us."

"The layers of the air," I replied, "are unequally warmed, and their refraction, which causes the rays of light to deviate in their course, reverses the objects which cover the plain, and, on the other hand, causes them to appear more elevated than they really are."

"So we see water in a place where in reality there is none."

"You don't take the sky into account, which is reflected on the ground beneath us as in a mirror. But the air is becoming cooler, and you will soon see the phenomenon slowly disappear, as if some invisible hand was pushing the mist back towards the horizon."While we were looking down over the plateau, and watching the mirage gradually fade away, a distant light suddenly shone out. Loud exclamations hailed the sight of this unknown bivouac; and, fixing our eyes on it, we all formed endless conjectures. We had not expected to meet with any habitation before the next day; and the cry of "land!" on board ship after a long voyage could not have made a stronger impression than the sight of this fire. The air was cool; still l'Encuerado was not allowed to kindle a light, which would perhaps have betrayed us to foes. It was now twenty days since we had met with a human being, and our first feeling, after the instinctive joy at the idea of seeing our fellow-creatures, was, alas! one of distrust.