“That’s pretty lively stuff, of course, Tubby,” continued Andy, with the skill of a diplomat, “but the worst is yet to come; for, do you know, Donald’s father is an engineer in the employ of the Canadian railway, and it happens that he pulls the munition train this very night, that these fiends are planning to destroy along with the bridge!”

Tubby was fairly holding his breath as he drank in all these amazing details. His round face began to grow furiously red with a riot of emotions that made his heart beat twice as fast as was its wont. Then, as if he dimly suspected that Andy, given to practical jokes, might be taking advantage of his confiding nature, Tubby turned toward the scout master and implored him to corroborate the story.

“Oh, is it all true, Rob?” he asked tremulously. “Would Andy be so mean as to deceive a trusting comrade in khaki? Please tell me, Rob!”

“Every word is just as he tells you, Tubby,” said the other, still engaged in gently, but more vigorously than before, rubbing the discolored leg of the boy; and, singularly enough, it did not seem to hurt quite as much as at first, from which Donald must be inclined to believe there was considerable virtue in that “magical compound” as a pain remover and a balm in time of trouble.

“And are we going to stand by him, Rob, and try to break up the dastardly game of those criminal plotters?” continued Tubby.

“You give them a pretty hard name,” laughed Rob. “I reckon they’d deny anything of that sort indignantly, saying anything is fair in war time. All the same, we believe they deserve to be called scoundrels. Yes, we mean to stand back of Donald, if that’s what you mean, Tubby. We settled all that on the way here.”

“Going over into Canada, and warn the bridge guards, you mean, Rob?”

“Nothing more or less,” he was informed steadily. “Our only fear is that we may not get there in time to save the bridge.”

“’Course we’re all in this, Rob?” asked Tubby. “You wouldn’t dream of asking me to stay behind, when anything of this sort was being pulled off? I’ve never balked when ordered to obey by a superior officer, but in such a case as this—well, you wouldn’t treat me so mean as that, I just know it, Rob.”

“Make yourself easy on that score,” said Rob, wishing to relieve the strain of suspense under which he knew only too well Tubby was laboring. “We’re all going, all but Wolf here, and we’ll leave him behind to guard the cabin, with plenty of grub to keep him alive for a week. I hope that satisfies you, Tubby.”