He turned laughingly to the guide, and said a few words to that effect, and the man laughed and nodded as he replied.

“Oh, what a big fib!” said Cyril merrily. “He says I speak his tongue beautifully.—Oh, there’s the colonel looking round at the mules. They’re having a beautiful feed here. Plenty of grass for the mules,” he said to the Indian, and the man nodded again, and said it was good.

The colonel said something very similar, as the boys strolled carelessly up, at a time when Perry felt as if he must run to his father, shouting: “Look out! Danger!”

“We must stay here two or three days, boys,” the colonel said. “The mules will revel in this grass and fresh water, and make up for their fasting lately.”

“I think not, sir,” said Cyril, speaking carelessly, and making believe to pat one of the mules, which turned sharply round and showed him its heels.

“What do you mean, sir?”

Cyril told him quickly; and as he spoke, the colonel’s hand twitched, and went involuntarily to his side, as if he were seeking a sword.

“Humph!” he ejaculated. Then quietly, and looking at the mules: “That’s right, lads; don’t make a sign. I daresay John Manning is right. He has eyes like a hawk, and he is true as steel. Well, I’m not surprised. I half expected it, though not quite so soon.”

“What shall we do then, father?” said Perry anxiously. “Go back?”

“Englishmen don’t go back, Perry,” said his father gravely. “They would not have colonised the whole world if they did. No, boy, we are going on, and I don’t think there is anything to fear. These people are all joined together to watch every stranger who comes into their country, in dread lest they should be in search of the Incas’ treasures, and they would be ready to fight in defence.”