"Yes; they are stampeding," decided Ned, riding alongside of Tad Butler.

"I don't believe it," answered Tad. "It looks to me as if something else were the trouble."

"What?"

"I don't know. It's an awful mix-up, whatever they may call it."

"Yes; see! They are fighting."

Surely enough, large numbers of the cattle seemed to be arrayed against each other, sending up great clouds of dust as they ran toward each other, locked horns and engaged in desperate conflict. It was noticed, however, that the muleys kept well out of harm's way, standing aloof from the herd and looking on ready to run at the shake of a horn in their direction.

"Now, look there! What are they doing?" asked Walter.

"They seem to be cutting out a bunch of steers," answered Tad. "That's funny. I can't imagine what it is all about." Neither could Professor Zepplin, who had ridden up at a more leisurely pace, explain to the boys the meaning of the scene they were viewing.

"If we knew, we might turn in and help," suggested Walter.

"That's right," replied Tad. "Suppose we ride up there where the men are at work. We may find something to do. Anyway, we'll find out what the trouble is."