"And don't you trespass on Centre O ranch again!" was Mr. Molick's warning. "I've seen enough of you."

Mr. Bellmore felt the same way about it, but did not think it necessary to say so.

He rode slowly back across the stream and rejoined his friends.

"Well?" asked Dave.

"It's all off," the Chicago man said. "I've ended negotiations with them, and I'm sorry I ever tried to do business. But it will be all right. They can do business in their own way, and we'll do ours as we please. I'll look into the irrigation possibilities on your property now, Mr. Carson. We'll not hear anything more from the Molick outfit."

But Mr. Bellmore failed to reckon on the mean characters of the Molick father and son. It was only a few days after this that one of the cowboys came riding post-haste to the ranch house. He dismounted in a cloud of dust, and seeing Dave and Mr. Carson standing together hurried toward them, calling out:

"Th' bottom must have dropped out of Rolling River. It's almost dry down below there, where I've got that bunch of fine cattle, and they can't get anything to drink. What are we going to do? Something must have happened to th' river."

"What can it be?" cried Dave. "Has an earthquake occurred, or has the river unexpectedly taken an underground course?"

"Neither one, I imagine," said Mr. Carson, slowly. "This is retaliation, I fancy. I'll go back with you Skinny, and see what has happened. But I'm sure it's retaliation."

CHAPTER XVI