He smiled cheerfully. “It is nothing,” he murmured.

“I really don’t care,” she said. “One does not shirk an adventure merely because it is disagreeable. The pity is that all this lovely sunshine must vanish.”

“It will reappear. You will be charmed with the novelty in an hour or less.”

“Is it far to the hut?”

“Hardly twenty minutes at our present pace.”

A growl from Barth stopped their brief talk. Another huge crevasse yawned in front. There was an ice bridge, with snow, like others they had crossed; but this was a slender structure, and the leader stabbed it viciously with the butt of his ax before he ventured on it. The others kept the rope taut, and he crossed safely. They followed. As Helen gained the further side she heard Bower’s chuckle:

“Another thrill!”

“I am growing quite used to them,” she said.

“Well, it may help somewhat if I tell you that the temporary departure of the sun will cause this particular bridge to be ten times as strong when we return.”

“Attention!” cried Barth, taking a sharp turn to the left. The meaning of his warning was soon apparent. They had to descend a few feet of rough ice, and Helen found, to her great relief it must be confessed, that they were approaching the lateral moraine. Already the sky was overcast. The glacier had taken to itself a cold grayness that was disconcerting. The heavy mist fell on them with inconceivable rapidity. Shining peaks and towering precipices of naked rock were swept out of sight each instant. The weather had changed with a magical speed. The mist advanced with the rush of an express train, and a strong wind sprang up as though it had burst through a restraining wall and was bent on overwhelming the daring mortals who were penetrating its chosen territory.