"Well, if we've got to grind, I suppose it is up to me to do my share," he remarked, with another sigh. "But that ice——"
"Don't do it on my account, Roger."
"Yes, but, Dave, I can't stand it to see you grinding alone—when I know I ought to grind too. My father wants me to get a good education, too. So here goes," and then Roger began to study just as hard as Dave and Polly. Then Phil came in, and Shadow, and seeing the condition of affairs, went at it like the rest. Dave's example certainly carried a wonderful influence with it, even though the youth himself did not fully realize it.
"This fifth problem in geometry is a corker," observed Shadow, presently. "If the gable of a house is fourteen feet long on one side, and the angle at the top is one of forty degrees, and the other side is but eleven feet long, how——"
"Don't say a word, I've been working on that for half an hour," said Phil. "Tried it this noon, after dinner, and couldn't get it."
"It's very easy," answered Polly.
"Have you got it, Dave?" asked Roger.
"Yes, but I didn't find it so easy."
"Guess I'll climb up some gable and measure it," said Shadow. He began suddenly to grin. "That puts me in mind of a story. Once a college professor——"
"Don't!" begged Polly. "I have some figures in my head I don't wish to lose!"