Jack lay down and reached his gun barrel out to his chum and by its aid Mark got to the edge of the ice and scrambled out of the water. They ran him back to the campfire in short order and then Andy set out to make a second attack upon the wolves, the pack having returned to eat up their comrades. However, the beasts had already been punished enough. They could not stand before the old hunter, and ran howling down the glacier. "One thing about it," Andy Sudds said, "we can make up our minds there is an outlet from this field of ice in that direction. To escape we have only to follow the wolf trail." They were not in shape to travel at once, however. Jack's hand pained him frightfully after his work in helping Mark escape from the water, and Mark, himself had a serious chill before sunrise. Treated by the professor, however, the youth quickly recovered from his plunge into the lake. But it was decided, nevertheless, to wait over another of the short, torrid days before leaving the trees, for the traveling by night would be much more practicable. So they were leisurely eating another meal of bear steak when the sun touched the horizon with rosy light. The dawn broke in what Jack termed "record time," and Washington White gave vent to his surprise in characteristic language: "I done seed de sun rise in eb'ry clime, f'om de Arctic t'rough de tropical to the Antarctic kentries. But de speed wid w'ich disher sun pops up is enough ter tear de bastin 't'reads loose from de Universe--it suah is! I finds mahself," continued Wash, reflectively, "circumnavigatin' ma mind to de eend dat disher 'sperience we is all goin' t'rough is a hallucination ob de brain. In odder words, we is all climbin' trees an' makin' a noise like de nuts wot grows dere. Do you hear me?" "We hear you," said Jack. "And if you think you're crazy, all right. I don't feel like joining you in the foolish factory yet awhile." "I more than half believe the darkey's right," muttered Phineas Roebach. "This experience is enough to turn the brain of any man. I don't myself believe half the things we are seeing." The heat of the sun, as soon as it had well risen, was a fact that could scarcely be doubted, however. They were glad to seek the shade of the fir trees, and the surface of the glacier began to melt with a rapidity that not only surprised, but startled them. A flood of water, like a great river, began to sweep by the narrow bit of earth on which they were encamped. The roar of the falling water into the crevasse from which they had so fortunately escaped soon became deafening. They all had to remove their outer garments. The smell of the heated fir branches was like the odor of a forest on a hot August afternoon. Professor Henderson watched the melting of the ice with a serious face. When Mark asked him what he thought threatened their safety, the old scientist replied: