"A new one?"
"Exactly. That made me hunt around thoroughly, and after a while I discovered this, under my rowing sweater."
As Shadow finished, he drew from his pocket a doubled-up sheet of paper. Dave unfolded it, and saw it was a large sheet of rare American postage stamps.
"Did you find any more than this?"
The other youth shook his head.
"Did you hunt all around the boathouse?"
"Yes, I hunted high and low, in the building and out. I have spent all my spare time hunting; that is why I have had such poor lessons lately."
"Don't you remember going out to row during the night, Shadow?"
At this question, Shadow Hamilton started.
"What do you know about that?" he demanded.