Night came on, and the sky was full of gray clouds violently driven by the wind, although just round us the trees remained quite motionless. It was now too late to construct a hut, and we all stretched ourselves, without other covering than the canopy of heaven, on beds of dry moss. I woke up perished with cold; not a star appeared in the sky. Of the uneasiness produced by the euphorbia plants, nothing now remained but a sense of weight in the head and a slight inflammation in the throat. I tried to go to sleep again, and fell at length into a kind of painful torpor. I fancied I heard birds of prey crying, and a roaring noise in the recesses of the forest. I got up with a view of driving away this nightmare; but it was not a dream; the day was just breaking, and the birds were welcoming its advent with many a clamorous note. A dull roar, like that of a gale of wind rattling through a forest, resounded louder and louder. I called Sumichrast and l'Encuerado; the latter at once shouted out in horror-- "The torrent!" Seizing Lucien, I carried him in my arms, while the Indian hastily gathered together all our travelling gear that lay scattered around. With powerful efforts I soon reached the top of the steep bank, followed by my companions and Gringalet. Lucien, suddenly disturbed in his sleep, scarcely had time to know what had happened. A furious uproar perfectly deafened us, and a flood of yellowish water came rushing by; I saw one of our coverings float off on its surface, and almost immediately, as if impelled by some superhuman force, the rocks came rolling down, dashing together under the force of the liquid avalanche. One minute more and it would have been all over with us, or, at the very least, we should have lost all our baggage and weapons, without which our position must have been truly critical. As it was, our hats only had sailed off in company with our covering; this loss much vexed us, for none of us except l'Encuerado could walk with a bare head under the rays of a tropical sun. We should have been somewhat consoled by meeting with a palm-tree; but in the mean time, the Mistec, like all his countrymen, knew well how to meet such an emergency. So we covered our heads with the leaves of the water-lily, often used by the Indian women for a parasol. We knew by experience the rapidity with which these mountain torrents will overflow. If it had been a month later during the rainy period, of course we should not have exposed ourselves to the peril of camping in the bed of a stream; for we had remarked the evening before that the sky was obscured by gray clouds, and this ought to have put us on our guard.