"I'm glad now we made the shelf big enough.

I reckon you had the dimensions of this thing in your mind when doing your measurements, Hugh." Next they lifted the tub on to the platform above.

It could be readily balanced on the edge so that a very slight pull from the cord would tilt it forward, when the propensity for water to seek its own level would do the rest.
They tested it a number of times, and it worked splendidly.

"When filled with water, it would only add to the gaiety of things," Thad said, fervently.
"But where will we be all the time, Hugh ?" he now asked.
"I've arranged all that," he was assured.

"One of the objects of these upright boards is to act as a cover for us, as well as to form a trap for our guests.