But as he reached the side of his long-eared companion, the creature, which had only been stunned by the bolt, suddenly sprang to its feet and, no doubt crazed by fear, began striking out with its hind hoofs. As ill luck would have it, poor Juan came within direct range of the first kick, and was sent flying backward by its force.

Behind him lay the water hole, and before he could stop the cowardly guide found himself over the brink and struggling in the muddy water. His cries for help were piercing, but as Mr. Bell and the boys were busy, and as they knew that the Mexican was in no actual peril, they left him there for a time.

In the meantime, the first terrific violence of the storm had subsided, and before long it passed. As it growled and muttered off in the distance, lighting up the desert with an occasional livid glare, Juan came scrambling out of the mud-hole. He did not say a word, but went straight up to his burro. He saddled it in silence, strapped his old guitar on its back and, swinging himself into the saddle, dashed off across the alkali, his long legs working like pendulums on either side of the little creature. It actually seemed as if he were propelling instead of riding it.

The boys wanted to know if they should set off in pursuit of their errant guide, but Mr. Bell said that it would be the best thing to let him go if he wished.

"He was more of a hindrance than a help," he declared, "and he and his burro between them ate far more than their share of food."

"But won't the poor man become lost or starve?" asked Miss Prescott, who, now that her alarm had passed with the storm, had joined the group.

"Not much danger of that," laughed Mr. Bell, "a fellow of Juan's type can subsist on next to nothing if he has to, and his burro is as tough as he is, I suspect."

"At any rate, he must have thought so when he got that kick," laughed Peggy.

"It reminded me of a verse I once heard," put in the former hermit.

And then, without waiting for anyone to ask him to repeat the lines in question, he struck up: