“Yes, she can sleep!” I muttered to myself, as my chagrin predominated in the tumult of emotions. “Ha! heavens!”

My attention was attracted from the sleeper to a fearful object. I had noticed a spiral-like appearance upon the lliana. It had caught my eye once or twice while looking at the sleeper; but I had not dwelt upon it, taking it for one vine twined round another—a peculiarity often met with in the forests of Mexico.

A bright sparkle now attracted my eye; and, on looking at the object attentively, I discovered, to my horror, that the spiral protuberance upon the vine was nothing else than the folds of a snake! Squeezing himself silently down the parasite—for he had come from above—the reptile slowly uncoiled two or three of the lowermost rings, and stretched his glistening neck horizontally over the hammock. Now, for the first time, I perceived the horned protuberance on his head, and recognised the dreaded reptile—the macaurel (the cobra of America).

In this position he remained for some moments, perfectly motionless, his neck proudly curved like that of a swan, while his head was not twelve inches from the face of the sleeper. I fancied that I could see the soft down upon her lip playing under his breath!

He now commenced slowly vibrating from side to side, while a low, hissing sound proceeded from his open jaws. His horns projected out, adding to the hideousness of his appearance; and at intervals his forked tongue shot forth, glancing in the sun like a purple diamond.

He appeared to be gloating over his victim, in the act of charming her to death. I even fancied that her lips moved, and her head began to stir backward and forward, following the oscillations of the reptile.

All this I witnessed without the power to move. My soul as well as my body was chained; but, even had I been free, I could have offered no help. I knew that the only hope of her safety lay in silence. Unless disturbed and angered, the snake might not bite; but was he not at that moment distilling some secret venom upon her lips?

“Oh, Heaven!” I gasped out, in the intensity of my fears, “is this the fiend himself? She moves!—now he will strike! Not yet—she is still again. Now—now!—mercy! she trembles!—the hammock shakes—she is quivering under the fascin— Ha!”

A shot rang from the walls—the snake suddenly jerked back his head—his rings flew out, and he fell to the earth, writhing as if in pain!

The girls started with a scream, and sprang simultaneously from their hammocks.