"You needn't be. Kennedy is glad. He hopes to make the cavalry, and he says he wants to train that wrist for wielding a sabre."

"Can you two near-plebes find time to drop in this evening, at just 8.15?" demanded Greg.

"Certain idea! What's up, Holmesy?"

"It isn't a feed," declared Greg. "But I think you'd be sorry afterwards if you failed to come."

"We'll be here," promised Dunstan.

"Then I guess our party will be complete," mumbled the mysterious Greg.

"Say, Holmesy," nudged Dunstan, "how did you get that smear on the back of your hand? Do you know, it looks like the famous one that Cadet Dodge rubbed off with a borrowed handkerchief, once on a time."

"Does it?" asked Greg innocently. "Be good enough to loan me your handkerchief, then?"

"Not much!" growled Dunstan, backing away. "The loaning of personal linen seems on its way to becoming a court-martial offence."

When the visitors had left, d.i.c.k turned on his chum, demanding curiously:

"What's the game for tonight, anyway, Greg?"

"You didn't see how I got this smear on my hand, did you, old ramrod?"

"No."

"Then I'm not going to tell you at present," replied Greg, going to his washbowl and pouring in water. "But the way I got it set me to thinking.

"About what?"

"Well, about the way Bert Dodge got his hand smeared back in the days of ancient history. And, old ramrod, I believe that following up the clue may lead to some other discoveries that will possess a vital interest for you."

"But-----"

"No more at present! That's a special order," affirmed Greg.

"Be good, like the rest, and wait until 8.15 to-night."

At supper, in cadet mess hall, the talk all naturally turned to the diamond game with Lehigh that afternoon. The Army, at the outset, had hardly expected to win against that year's Lehigh nine. When the game was well under way, Army hopes had been still lower. Now, the talk was all on how Prescott and Holmes had saved the game to the Army. Even Maitland, without a trace of jealousy, conceded them most of the credit.

"What has cherubic, spoonoid Holmesy got up his sleeve for 8.15?"

asked Dunstan in an undertone of Anstey.

"I reckon, suh, you'll have to apply for particulars to the Information and Security Service, suh," replied the Virginian. "To the best of my belief, suh, the secret is all Mr. Holmes's."

So no more questions were asked. But at 8.15, to the second, Furlong and Dunstan tapped on the Prescott-Holmes door, and, as they did so. Anstey turned at the head of the stairs. Punctuality is one of the cardinal virtues of the soldier; to be a half minute late is a grave breach of etiquette; to be five minutes late amounts almost to a crime.

"Now, Holmesy, we want light," insisted Furlong.

"At first blush," returned Greg, "some of you may not like the job. It is nothing more nor less than a visit to Dodge's room, while he and Blayton are absent at the hop."

"It is an extreme measure, surely," murmured Dunstan.

Anstey remained silent, waiting for further particulars.

"What I would call to your attention," went on Greg, "is that my roommate, old ramrod, was nearly bounced out of West Point for something he never did. I believe, and probably you all do, that Mr. Dodge played an evil and guilty part in what became nearly a tragedy."

"I wouldn't put anything mean beyond Dodge," replied Furlong.

"Now, I believe I can take you to Dodge's room. Both he and Brayton are absent at the hop. Brayton has always been a decent fellow, I don't believe he admires Dodge any too much, but he has to put up with his roommate. Now, in that room I hope to find evidence which will prove that Dodge is not fit to be a member the corps of United States Military Academy cadets. Will you come with me and look for the proof?"

"I suhtinly will, suh," replied the Virginian promptly.

"If Anstey will go on a job like that," muttered Dunstan, "then I guess it's a proper undertaking for gentlemen."

"I thank you, suh," nodded the Virginian gravely.

"Then come along, all hands," begged Greg. "If we find anything of the sort that I expect to, then there will be witnesses enough to prove the find to the satisfaction of the cla.s.s and of the corps."

Feeling like so many conspirators, this committee of five moved along to Dodge's room. Greg went a little ahead and tapped.

Had Dodge been there it would not have interfered seriously with his plans. But there was no answer, so Holmes pushed open the door, turning the gas half on and lighting it.

"This afternoon," declared Greg, "I dropped a stub of a pencil in our room. It fell on the bricks of the floor of the fireplace, and rolled into the s.p.a.ce between two of the bricks. In getting that pencil out I got on the back of my hand the smear that you all saw.

"Fellows, I've been thinking for weeks and months about that smear on the back of Mr. Dodge's hand. When I saw the one on the back of my own hand it occurred to me at once how Mr. Dodge might have got that black spot on his hand. It came over me, all in a flash.

I knew that Brayton and Mr. Dodge would be out of the way this evening at the hop. Dodge has a hiding place somewhere in this room. From the past history of the Academy we know that favorite hiding places have always been under the bricks of the fireplaces.

For use in the winter time the hiding place must be in the outer edge of the brick flooring, close up to where it joins the boards.

In such a hiding place the fire wouldn't harm the hidden objects.

Now, some of you might help me to see what we can find."

Anstey, with a gravely judicial air, knelt beside Holmes. Together they tapped back and forth over the bricks with rulers taken from the study tables.

"This is the brick that hides the place, I reckon, suh," announced the Virginian rather deliberately.

"Let's pry it up, then," suggested Greg.

But the brick resisted rather strenuous efforts.

"That's odd, in itself," muttered Holmes. "Almost of the bricks in these fireplaces come up as easily as a naval apprentice's dinner.

Anse, we've got to work at this brick until we have loose. It surely hides something."

"We mustn't damage either the wooden or brick flooring," warned Furlong. "If we did find anything, after all, think of the row Dodge could raise over the vandalism in his room."

So the time slipped by, faster than any of them knew. But these five cadets, now satisfied that the obdurate brick really did hide a secret toiled on with no thought of surrender.

At last they struck the combination. The brick back of the one that so resisted their efforts was finally pried up, after a good deal of effort. This opening laid bare a neat but powerful spring.

Had they had, at the outset, the whole secret of this spring, they could have raised the resisting brick in a second's time.

"Get it up---must have a look!" cried Prescott hoa.r.s.ely.