V. IV Verne around. His great height gave him a commanding view of the whole horizon; but after a keen rapid survey, he quickly resumed his seat and went on. About a mile further he stopped again, and leaving the straight route, made a circuit of some miles north and south, and then returned and fell back in his place at the head of the troop, without saying a syllable as to what he hoped or feared. This strange behavior, several times repeated, made Glenarvan very uneasy, and quite puzzled Paganel. At last, at Glenarvan's request, he asked the Indian about it.

Thalcave replied that he was astonished to see the plains so saturated with water. Never, to his knowledge, since he had followed the calling of guide, had he found the ground in this soaking condition. Even in the rainy season, the Argentine plains had always been passable.

"But what is the cause of this increasing humidity?" said Paganel.

"I do not know, and what if I did?"

"Could it be owing to the RIOS of the Sierra being swollen to overflowing by the heavy rains?"