"Good enough!" cheered Hazelton. "I like that old-time fight talk! But
are you going to do anything to protect the wall to-night, Tom?"

"I am," announced the young chief engineer.

"What's the plan?"

"Let me think," urged Reade. "Now, I believe, I have it. We'll send one
of the motor boats out here, with a foreman and four laborers. They can
arm themselves with clubs and patrol the water on both sides of the wall.
The 'Thomas Morton' has a small search-light on her that will be of use in
keeping a close eye over the wall."

"That ought to stop the nonsense," Harry nodded. "But I don't imagine that
any further efforts to destroy the wall will be made tonight, anyway."

"We'll have the night patrol out _every_ night after this," Tom declared.
"But I'm not so sure either, that another effort won't be made to-night, if
we don't put a watch on to stop this wicked business. Harry, do you mind
remaining out here while I run back and get the boat out?"

"Why should I mind?" Hazelton wanted to know.

"Well, I didn't know whether you would, or not---after seeing that
imaginary something behind you."

"Don't laugh at me! I may have had a start, but you ought to be the first
to know, Tom, that I haven't frozen feet."