When, at the end of an hour, the officer of the guard returned to the post where he had left Glen, the boy was not to be found. In vain did Mr. Brackett call his name, at first in low tones, and then louder. In vain did he question the other sentries. They had neither seen nor heard anything more suspicious than an occasional coyote. In vain was the whole camp aroused and a search made through its tents and wagons. Not a trace of the boy, who was so universally liked, was to be found. He had disappeared as absolutely, so far as they were concerned, as though the earth had opened and swallowed him.