test."

"Those boys were trapped, all right," protested Radwin, in a low tone.
"I can't begin to imagine how they ever got loose again."

"They got loose because you're a fool!" raged the older man.

"I'm good-natured, Mr. Rhinds" cried Radwin, an ugly gleam coming into
his eyes, "but I don't stand everything. You'll need me yet so you'll
do well to keep a civil tongue behind your teeth!"

"Stop that! Don't try any mighty airs on me!" quivered Rhinds.

"Oh, blow off your steam, quietly, and then become reasonable," yawned
Fred Radwin. "First thing you know, you'll really make an enemy of me,
and then the trick will be done, Rhinds. For you need me. Just now,
you need me worse than you ever did in your life before."

"Need you?" sneered the other. "What for?"

"Well, for one thing, there are other tests ahead of the submarine
boats."

"Can you win any of those tests?" jeered Rhinds, harshly.

"No; but I can do what will, perhaps, be the next best thing. I can
stop the boys aboard the Pollard craft from being on hand to put their
boat through all its paces. All you need is to have the Pollard end
blocked. You can more than hold your end against the other submarines."