"You'll have to keep him quiet."
"I'll try," Jeff promised.
His blue eyes were dancing and his smile broadened. Some dogs were affected by sounds beyond those which normally came to their ears, and Jeff had never decided whether they reacted because certain noises grated harshly on their ears, because some sounds reminded them of a battle or other experience, or if they were merely inclined to be in tune. Obviously Pal was given to the latter sort of response. Waiting until Pop returned to the desk, Jeff blew the same note as softly.
Pal responded with a whole chorus of shrieks that began on a tenor note and ascended to a high soprano. The echoes rolled back from the walls and seemed to bound forward again. It was almost an incredible thing that was promptly repeated when Jeff blew another note.
"Shut that dog up!" Pop shrieked.
"I'm trying!" Jeff said desperately.
The door opened. Joe Parker came in. Jeff blew again, very softly, and Pal's immediate response filled the room. Their faces angry, Pop and the constable appeared in front of the cell and shouted to make themselves heard.
"Quiet!"
"What'd you say?" Jeff yelled.
"Quiet!"