As the chief, ignorant of hours and miles, could not tell me the extent of the forest, I determined to let him and Timoteo make their way through as best they could, crawling through the branches, to the Sun-Worshippers, and secure their help in cutting a way for the horses. After dividing the food I had, we separated. Timoteo and the Indian crept into the forest and were soon lost sight of, while Old Stabbed Arm and I, with the horses, retraced our steps, and reached the open land again. After an earnest conversation my companion shouldered his rifle and went off to hunt, and I was left with only the companionship of the grazing horses. I remained behind to water the animals, and protect our goods from any prowling savage who might chance to be in the neighborhood. My saddle-bed was spread under a large _burning bush_, or incense tree, and my self-imposed duty was to keep a fire burning in the open, that its smoke might be seen by day and its light by night. Going exploring a little, I discovered a much better descent down the precipice, and water was more easily brought up. Indeed, I decided that, if a certain deep chasm were bridged over, it might be possible to get the horses themselves to descend by a winding way. With this object in view I felled saplings near the place, and in a few hours constructed a rough bridge, strong enough to bear a horse's weight. Whether the animals could smell the water flowing at the bottom, or were more agile than I had thought, I cannot tell, but they descended the almost perpendicular path most wonderfully, and soon were taking draughts of the precious liquid with great gusto. Leaving the horses to enjoy their drink, I ascended the stream for some distance, in order to discover, if possible, where the flow came from. Judge of my surprise when I found that the water ran out of a grotto, or cavern, in the face of the cliff-out of the unknown darkness into the sunlight! Walking up the bed of the stream, I entered the cave, and, striking a few matches, found it to be inhabited by hundreds of vampire bats, which were hanging from the sides and stalactites of the roof, like so many damp, black rags. On my entrance the unearthly creatures were disturbed, and many came flying in my face, so I made a quick exit. Several which I killed came floating down the stream with me; one that I measured proved to be twenty-two inches across the wings. My exploration had discovered the secret of the clots of blood we had been finding on the horses' necks every morning. The vampire-bats, in their nightly flights, had been sucking the life-blood of our poor, already starving animals! It is said these loathsome creatures--half beast, half bird--fan their victim to sleep while they drain out the red blood. Provided with palm torches, I again entered the cavern, but could not penetrate its depths; it seemed to go right into the bowels of the mountain. Exploring down stream was more successful, for large