"Then nail 'em down," answered the story-teller of the school, calmly. "This college professor was paying a visit to some lumbermen and he was trying to convince one old tree-chopper of the value of an education. Says he, 'Now, look at it. You don't know how to measure a plank accurately.' 'Don't I, though?' says the lumberman. 'No, you don't, and I can prove it,' says the professor. 'Now, supposing you had a plank twenty feet long and one foot wide at one end and running up evenly to two feet wide at the other end. Where would you saw that plank crosswise so that one end would contain as much wood as the other? You can't do that problem and I know it, because you never studied higher mathematics.' 'That's dead easy,' says the old lumberman. 'I don't even need a pencil to figger it out,' says he. 'Jest balance thet plank on a bit of stick, an' cut her where she balances!' And then the college professor didn't have anything more to say, for he made out the lumberman was a hopeless case." And at this tale all the boys present snickered.

"Shadow would have a job climbing up on a gable to measure it," said Phil. "I'd rather do it on paper." Then Polly Vane and Dave gave Shadow some points as to how the problem should be worked out.

In some way Link Merwell and Nat Poole got an inkling of the fact that it was known they had done all in their power to break up the initiation ceremonies of the Gee Eyes, and, not to be cornered, both of the boys did all they could to keep out of the reach of their fellow-students. But the Gee Eyes did not forget, and at a special meeting of the club it was voted to give both Poole and Merwell "the cold shoulder" until something more definite could be done. By "the cold shoulder" was meant that no member of the club was to associate with Poole or Merwell or speak to them unless required to do so during school sessions. Outside of the schoolrooms they were to be as utterly ignored as though they did not exist.

"I think that will bring Nat Poole to terms, without going further," said Roger. "He hates to be left to himself—I've noticed that many times."

"Well, it may have that effect on Nat," answered Dave. "But I think it will only make Merwell more savage," and in this surmise he was correct.

The tests proved a severe strain on many of the boys, and Dave was glad when they were over. What the standing of each student was would not be known until later.

"Now I'd like to go skating," said he to Roger, but this could not be, for warm weather had set in and the ice and snow were rapidly passing away. That night it rained, and this made everything outside very sloppy.

Dave went to bed early, for he was tired out. He slept soundly for several hours and then awoke with a start, for something had brushed his face. He sat up, and was just in time to see a form gliding from the dormitory.

"Hello! what can that mean?" he murmured to himself, and then he sprang up. "Guess I'll investigate." And then, putting on a pair of slippers and donning a long overcoat that was handy, he made after the person who had just disappeared.