"But what else happened about that handkerchief?
"Dodge used it, then started to tuck it into his own blouse. I grinned and reminded him that the handkerchief would fit better inside my blouse."
"And then?"
"Just then the call sounded, and we had to jump. Dodge handed me back the handkerchief with a swift apology, and raced away to join his section."
"And you?"
"I tucked the handkerchief in my blouse."
"Now, do some hard thinking," insisted Holmes. "Did you take that handkerchief out again until the unlucky time just after you had turned away from the board after explaining in math.?"
Dick remained silent, while the clock in the room ticked off the seconds.
"I am sure I did not," he replied firmly. "No; that was the next time that I took my handkerchief out."
"Huh!" muttered Greg. "We've got our start. And it won't be far to the end, either. Cheer up, old man!"