Then as he stepped forward the rim of a white skirt came into view. A second later his advance brought him to a point from which he obtained a full view of Rosalind Chalmers, sitting on the branch of a tree.

"Call off your dog!" she commanded.

Sam removed his gaze from the vision in the tree and studied the animal thoughtfully. The setter, having sighted the boatman, ceased baying and sat down with an alert eye upon the quarry.

"The dog, I said!" said Rosalind harshly. "Call him off!"

Sam's glance returned to the lady on the branch.

"Good afternoon," he said pleasantly.

Rosalind returned the inspection through angry eyes.

"Are you going to call off the dog?" she demanded.

"Why, I was just thinking about it," drawled Sam. "I don't know that I ought to discourage him."

The lady in the tree uttered an exclamation.