Then followed a great hacking of dull knives and cracking of limbs, with the occasional swish of an armful into the camp. The boys worked like beavers for a while, and got thoroughly warmed again, and the air within was filled with resinous fragrance. That done and arranged to their experienced leader's satisfaction, they wrapped themselves like Indians in their blankets and tumbled down upon the heap of boughs; the air trembled with a chorus of strange sounds as one by one they dropped off into a drowsy sleep, with an occasional wriggle as a knot, or the end of a limb, made itself felt through the many-folded blanket, and engraved a distinct dent upon the sleeper's back; while overhead, the giant cloud crept upward slowly, slowly toward the zenith, spreading east and west without a break. One half of the valley had vanished in the blackest shadow, and still the gilded edge swung steadily on, with the slow, resistless sweep of misty legions upon legions, armed in ebon mail; vast billows of night that drowned the scattered stars that met them, one by one. Then it struck the full moon and blotted it from sight. The world of the little valley dropped into night, and all was dark as Erebus. A breath of wind whispered through the forest, and died away, sighing, in the pines. Ramon awoke suddenly. Straight from the centre of that sea of blackness, like the plummet of an engineer, like the lead of a storm-tossed sailor, shot a drop of rain. Down it came with unerring swiftness, right through one of the spectacled gentleman's improvised "sky-lights" in the roof, and splashed in the Cuban's face. Half-dreaming still, he sleepily rolled over out of range; he had been awakened before in that way, and was used to it. There was a slope now in the pile of boughs, and Harry Eveleth slid down into the vacated place unconsciously. Splash! and the raindrop covered his cheek with water. Dimly through his dormant brain the idea crept that he was back in the dormitory, and some one was trying the old trick of hanging a saturated sponge above his head; he had done it himself, once, and this was retribution. With a smothered grunt of discontent he gave Ramon a shove that sent him further, and rolled over into his place. Frank Hapgood began to slide--began to dream that he was falling down through a frightful place that had no bottom! The air whistled shrilly past his head. The black walls of the pit shot upward swiftly and he could see the faint light far up at the mouth of the shaft growing dimmer until it too went out! He tried to scream, but the wind caught the sound and carried it away with a rush of mocking laughter; he tried to reach out and grasp the walls but his hands were bound! Then he felt that he was drawing near the end; he had fallen miles!--and now his speed was slackening, and he was falling so softly, so lightly, till at last, like a downy feather he floated on the air, as a spirit from another world. He had reached the centre of the earth!