The ascent now became very perilous. They no longer advanced without carefully examining the ice. Wilson had taken the lead, and with his foot tested the surface of the glaciers. His companions followed exactly in his footsteps, and avoided uttering a word, for the least sound might have caused the fall of the snowy masses suspended eight hundred feet above their heads.
They had reached the region of shrubs, which, four hundred and fifty feet higher, gave place to grass and cactuses. At eleven thousand feet all traces of vegetation disappeared. The travelers had stopped only once to recruit their strength by a hasty repast, and with superhuman courage they resumed the ascent in the face of the ever-increasing dangers.
Two hours more of terrible exertion followed. They kept ascending, in order to reach the highest summit of this part of the mountain.
SOMEWHAT SERIOUS.