"Why, it's the very same sound we heard in the mountains!" exclaimed Larry. And his companions confirmed him.
"The same cry you heard in the mountains?" repeated Mr. Wilder.
"Yes, sir," and in a few words the elder of the brothers related their adventures.
"Then it's a signal," declared Pete. "You boys have been followed.
It's a mighty good thing we were camping here."
"Those cries came from the plains. Mebbe it's the thieves going for more cattle," declared Sandy.
"We'll find out what it is. Everybody to horse!" commanded Mr. Wilder. "Pete, three or four of you go with Horace and the Aldens to get their ponies. We'll ride up and join you."
CHAPTER XIX
A TERRIBLE PLOT
Quickly the men ran to the woods where they had concealed their ponies, unhobbled, saddled and mounted them, riding along till they came to where Pete and the boys were.
"Which way shall we go?" inquired Sandy when all were In their saddles. "That cry came from straight ahead of us on the plains, according to my judgment."