The third heap will be the whole, sound strips.
Mebbe I'd better do all the sorting myself." So the boys stood by, watching Driggs as he sorted the bundles of bark with the speed of a man who knows just what he wants.
A quantity of the bark went on to the "worthless" heap, yet there was a goodly amount in each of the other piles by the time that the boat builder was through sorting it.
"You've done first rate, boys," he announced at last.

"Is there much more of that bark on Katson's Hill ?" "We ought to be able to bring in fifty times as much bark as we've brought already," Dick answered.
"I wish you would," Driggs retorted.
"And give up the whole of our summer vacation ?" Danny Grin asked anxiously.
"Well, there is that side to it, after all," Driggs admitted quickly.
"It must be a tough job on your backs, too.

But, boys, I wouldn't mind having a lot of this stuff, for birch bark canoes are coming into favor again.

The only trouble is that birch bark is hard to get, these days, and costs a lot to boot.

So it makes birchbark canoes come pretty high.