RECENT experiments have shown the velocity of electricity to be 576,000 miles in a second. At this rate it would perform the circuit of the earth _three times in the twinkling of an eye_! The Tiger’s Cave. AN ADVENTURE AMONG THE MOUNTAINS OF QUITO. On leaving the Indian village, we continued to wind round Chimborazo’s wide base; but its snow-crowned head no longer shone above us in clear brilliancy, for a dense fog was gathering gradually around it. Our guides looked anxiously towards it, and announced their apprehensions of a violent storm. We soon found that their fears were well founded. The thunder began to roll, and resounded through the mountainous passes with the most terrific grandeur. Then came the vivid lightning; flash following flash--above, around, beneath,--everywhere a sea of fire. We sought a momentary shelter in the cleft of the rocks, whilst one of our guides hastened forward to seek a more secure asylum. In a short time he returned and informed us that he had discovered a spacious cavern, which would afford us sufficient protection from the elements. We proceeded thither immediately, and with great difficulty and some danger at last got into it. When the storm had somewhat abated, our guides ventured out to ascertain if it were possible to continue our journey. The cave in which we had taken refuge, was so extremely dark, that, if we moved a few paces from the entrance, we could not see an inch before us; and we were debating as to the propriety of leaving it, even before the Indians came back, when we suddenly heard a singular groaning or growling in the farther end of the cavern, which instantly fixed all our attention. Wharton and myself listened anxiously, but our inconsiderate young friend Lincoln, together with my huntsman, crept about on their hands and knees, and endeavored to discover, by groping, whence the sound proceeded. They had not advanced far into the cavern, before we heard them utter an exclamation of surprise; and they returned to us, each carrying in his arms, an animal singularly marked, about the size of a cat, seemingly of great strength and power, and furnished with immense fangs. The eyes were of a green color; strong claws were upon their feet; and a blood red tongue hung out of their mouths. Wharton had scarcely glanced at them, when he exclaimed in consternation, “We have come into the den of a ----.” He was interrupted by a fearful cry of dismay from our guides, who came rushing precipitately towards us, calling out, “A tiger, a tiger!” and, at the same time, with extraordinary rapidity, they climbed up a cedar tree which stood at the entrance of the cave, and hid themselves among the branches.