“What does Pedro say?” asked Frank.

With an exclamation, Ferdinand called to his retainer in Spanish, and the latter approached. There was a rapid interchange of conversation. Pedro shook his head in negation, and spread out his hands.

“No, Carlos has never been in these mountains.”

Ferdinand’s expression became worried. He shook his head, as he turned to the others.

“What shall we do?”

“We will have to start looking for them,” said Jack, determinedly. “They are lost. There is no doubt about it. But in these forests they may have swung about in a circle, and be near camp without realizing it. I’ll climb this great tree here in the clearing, and look around first. Then, if I cannot see them, four of us can set out to the four quarters of the compass, while the fifth remains in camp to fire off a gun at frequent intervals. That will serve to keep the searchers in touch with camp, and also will act as a guide to the others, in case they are within sound of the gun.”

Jack’s spirits had sunk low, despite his confident tone. He had a premonition of evil. The fact that no gun shots had been heard, led him to believe that the party at the very least had gone far astray. In that case, of what use for the searchers to stay within sound of a gun. The possibility of finding traces of a trail which could be followed, however, occurred to him. Without further words, he sprang into the tree and began clambering up the great trunk.

On the Chilian side, the mountains of the south are forest-clad and, because of the heavy rainfall on the west coast, there are numerous streams and lakes cutting them up. On the eastern or Argentinian slope, however, so little rain falls that the mountains are almost entirely bare of verdure.

The spot in which the party had pitched camp was a thickly-forested valley through which flowed a clear mountain stream. They had been unable, because of the density of the forest, to see much of their surroundings on arrival late the previous afternoon. In the morning, therefore, the two older men and Carlos had gone scouting as much as in search of game.

Before their departure, Mr. Hampton had called Jack to him.