"The broken range!" Drummond gasped. "Get up, Miss Strange, and come right along!"
Agatha looked at Thirlwell, who smiled. "I don't know what he means, but perhaps we had better go."
They followed the lad for some distance, though the shingle was large and rough. Now and then he turned and looked back impatiently, as if they were not coming fast enough; but at length he stopped and indicated the high ground to the north. Its bold line, colored a soft blue, stood out against the yellow sky, and in one place there was a sharply defined gap.
"There!" he exclaimed breathlessly. "I guess that's the broken range!"
"I see the break," said Thirlwell. "What about it?"
"Don't embarrass him," Agatha interrupted. "It's something he remembers. Perhaps his father talked about the gap."
"He did," said Drummond. "The thing's been kind of floating in my mind all day, but I couldn't get it fixed. Then I saw that gap and knew I'd got what I'd been feeling for."
"What did your father say?"
"The Indian camp he sent Strange to was in thin bush, close under the broken range, on the north side."
Thirlwell turned to Agatha. "Then we oughtn't to have much trouble in locating the ore. We know where the factory stood, and if we can find the thin bush, I can follow the line your father took."