She wondered what the man who mended the boats would say about Ann's two worlds.

She suspected that he would agree with Ann, and then proceeded to work herself into a fine passion at his agreeing with Ann against her. "That silly thing of two worlds is fixed up by people who can't get along in the one world," said she. "And that childish idea of one world is clung to by people who don't know the real world," retorted the trouble-maker.

To either side of the river were factories. Katie had never given much thought to factories beyond the thought that they disfigured the landscape. Now she wondered what the people who had spent that hot day in the unsightly buildings thought about the world in general—be it one world or two.

Worth had come up to the front of the boat. The day had weighed upon him too, for he seemed a wistful little boy just then.

She smiled at him lovingly. "What thinking about, Worthie dear?"

"Oh, I wasn't thinking, Aunt Kate," he replied soberly. "I was just wondering."

"You too?" she laughed.

"And what would you say, Worthie," she asked after they had gone a little way in silence, "was the difference between thinking and wondering?"

Worth maturely crossed his knees as a sign of the maturity of the subject. "Well, I don't know, 'cept when you think you know what you're thinking about, and when you wonder you just don't know anything."

"Maybe you wonder when you don't know what to think," Katie suggested.