himself on a cross rail nailed from one section of the spiling to
another. Carl Dudder followed him, and both moved cautiously
forward to the front end of the building. Once Ham slipped and a
slight splash followed.

"What's that?" cried Carl, in alarm, for he was decidedly nervous.

"My foot slipped, that's all," was the answer.

"Is it deep under here?

"Not over four or five feet."

"Where are those loose boards?"

"Right here. Now take hold of that end and we'll soon have them up
and be inside the building," answered Ham.




CHAPTER VIII

HOW TWO PROWLERS WERE TREATED


While Ham and Carl were moving around under the boathouse, Shep and
Snap were not idle. The doctor's son, on awakening, had wanted to
throw the flour paste out of the window at the midnight prowlers, but
Snap thought of another plan.