"Do you mean to tell me," began Sid, "that you didn't----" And then he stopped, at the grins that appeared on the faces of his chums. "What's the use?" he asked wearily. "All right, I'll get even with you two," he concluded as he put his camera away and proceeded to change his clothes. But a little later, when he had developed the picture of the fox, and found it to be a fine one, he forgot his anger and the ordeal he had gone through, for Sid was a true naturalist.