"By Klismas!" he gurgled. "Shiwas Charley no killee Motol Matt? Hoop-a-la!" and Ping ran to Matt and dropped down on his knees in front of him, hugging one of his hands in a maudlin expression of joy.

"Where have you been, Ping?" asked Matt.

"Allee same woods. Shiwas makee tie hands and feet, stoppee talk with gag. Whoosh! My thinkee you go topside, my no come tellee what Shiwas do. Velly bad pidgin!"

Then, little by little, Matt got the whole story of Ping's experience.

"You are positive Siwash Charley was one of the men who knocked you down, here at the camp, and carried you into the woods?" asked Matt.

"My savvy Shiwas plenty much," declared Ping.

"I guess there's our proof, gentlemen," said Cameron. "Siwash can't dodge that."

"Hardly," said one of the officers. "If Siwash is caught, he'll be taken care of. What a dastardly piece of work! What made the fellow such an enemy of yours, Matt?"

"He was only a tool in the hands of another," said Matt. "That other man was an enemy of Traquair's, and the fellow didn't want the aëroplane to stand the test she faced to-day. The money Mrs. Traquair is to receive will enable her to pay a mortgage which this other scoundrel holds on a quarter section of land in Wells County."

"And all this double-dealing is about a mortgage on a quarter section of prairie land! It hardly seems possible."