"That's so," agreed Floyd.
"Well then, we've just got to do something!" said Rosemary, desperately. "And I'm going to do it."
Again she started up.
"Wait a minute!" exclaimed her brother again.
He seemed to be listening. He leaned forward, and then softly arose from where he was sitting and went forward.
"What is it?" asked his sister in a low voice.
"I thought I heard voices—good old United States voices, and not this jargon of Mexican and Spanish," was the reply. "Maybe some of the attackers, whoever they are, have broken through."
A look of delighted joy came over the face of Rosemary. But a moment later it faded away and she seemed hopeless.
"It can't be," she said. "There'd be a lot of yelling and shouting if any of those who are attacking the Yaquis had broken through their lines," she went on. "There's no use waiting, Floyd. Let's try my plan!"
But her brother was not yet convinced.