Adventures of a Young Naturalist Part 31

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 b.u.t.terflies 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 s.h.i.+nes 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 a.s.sumed 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 pus.h.i.+ng the mist back towards the horizon."

[Ill.u.s.tration: "The moon rose, . . . and rendered the illusion more striking."]

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 s.h.i.+p 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.

[Ill.u.s.tration]

[Ill.u.s.tration]

CHAPTER XX.

THE MORNING AND NIGHT DEW.--THE TERRE-FROIDE.--WATER-SPOUTS AND WHIRLWINDS.--THE BARBARY FIG-TREES.--THE CACTUS-PLANTS.--THE VIZNAGA.--OUR HOPES DISAPPOINTED.--DON BENITO COYOTEPEC.

The sun had not risen when we were up and ready to start. We s.h.i.+vered with cold, for on the great plateau which we had now reached, to which the inhabitants of the lower regions give the name of _Terre-Froide_, the mornings are frosty. The profound darkness was succeeded by a dim twilight, afterwards by a fog, which penetrated our clothing as much as rain.

"There has been no shower," cried Lucien, "and yet we are all wet."

"It is the dew, Chanito; it is almost as abundant as the night dews in the _Terre-Chaude_."

"Are not morning and night dews the same thing?"

"Not exactly," I replied; "the morning dew is generally of a beneficial nature; but the Mexicans dread the other, which falls after sunset, and is said to be productive of fever."

"But from whence does all this moisture come?"

"From the air, which always contains a certain quant.i.ty, some of which it deposits on the ground, on stones and plants, as they become cool by radiation."

Just at this moment our attention was attracted by the first ray of the sun, which, piercing through a light cloud, shot across the plain like a bright arrow. The horizon, which had been visible, was now obscured by a mist, which gradually rolled towards us. By degrees, however, it drew off, and the trees a short distance away showed their rounded tops; while wide breaks opened here and there in the semi-transparent veil, and vanished as quickly as they had arisen.

The telescope was pa.s.sed from hand to hand, and each tried to discover if there was a hut where the glimmering fire had been descried the night before. The search was in vain; the reflection of the sun's rays quite dazzled us, and restricted the prospect; but, once in the right course, we might advance without fear of missing our point, and, according to our calculations, we would meet with habitations the next day or the following.

Gringalet's tongue hung out of his mouth; he found the journey over the nitrous soil very irksome, and the scanty leaves of the mimosa failed to screen him from the sun. What a contrast it was to the pleasant regions we had hitherto travelled through!

"Your country, after all, is not so nice a one as mine," said Lucien, addressing l'Encuerado.

"My real native country is much more beautiful than that we are now in, Chanito; in the first place, it has mountains and woods, and there it sometimes rains."

"Shall we see any snow fall, now that we are in the _Terre-Froide_?"

"No," replied Sumichrast, smiling; "you will not see any snow before next year, when you will be in France. The winters of the Mexican _Terre-Froide_ are like our European springs. It is, however, never warm enough to allow tropical fruit to ripen; but the _Terre-Froide_ only deserves its name when it is compared with the _Terre-Chaude_ and the _Terre-Temperee_."

"It seems to me to have been very badly named, for it is as hot now as the day when the south wind blew so strongly. Gringalet looks as if he was of my opinion, for he lolls his tongue out much more than usual."

"Upon my word!" cried Sumichrast, "Master Sunbeam's remark shows that he is a first-cla.s.s observer. You are as right as you can be," continued he, placing his hand on the boy's shoulder. "In the plains of the _Terre-Froide_ the heat is much more uncomfortable than in the _Terre-Chaude_ itself, where an insensible perspiration always mitigates the oppressive rays of the sun. A few days' walking in this atmosphere will do more in bronzing our skins than all the rest of the journey."

My companion suddenly stopped short, and pointed to the horizon with his finger.

"That's smoke," cried Lucien.

"No, Chanito," replied l'Encuerado, "it is a _tornado_."

Seeing a slender column of dust rising up to the clouds, I had, at first sight, formed the same idea as my son. It was, in fact, nothing but a whirlwind of dust, which disappeared soon afterwards.

"There is no wind," observed Lucien; "how is it that the dust rises so high?"

[Ill.u.s.tration: "The sand rose rapidly, whirling round and round."]

"There is every cause for wonder," I replied, "for no _savant_ has yet explained the real cause of this phenomenon."

"If we happened to be caught in one of these whirlwinds would it carry us away?"

"No, Chanito," replied the Indian, "it would be content with throwing us down."

"Then you've had some experience of them?"

"Yes; when I used to play with the children in our village, and a _tornado_ came within reach, we were always delighted to run through it."

About a hundred paces from us, although there was not the slightest breeze in the air, the sand rose rapidly, whirling round and round. The rotation did not extend over a s.p.a.ce of more than a few feet. There was no apparent cause for it, and the phenomenon ceased as unaccountably as it commenced.

Lucien was of course dying with anxiety to run through one of these _tornadoes_; but all that we saw were quite beyond reach.

"I think," said Sumichrast, addressing me, "when it is thoroughly studied on the great plains of Mexico, we shall be able to explain the cause of this phenomenon. In a general point of view, these whirlwinds are nothing but water-spouts in miniature."

"A water-spout!" asked Lucien; "what is that?"

"It is a natural phenomenon very like what you have just witnessed; but it is of a far more formidable character, for it destroys every thing it comes in contact with!"

"Did you ever see one, papa?"