It began slowly at first and then went faster and faster. Boom Boom Boom Boom-Boom-Boom Boo-Boo-B-B-B-B-b-b-b-b-boom! It was like the long roll on a bass drum. Peter laughed right out. "That's Strutter the Stuffed Grouse!" he cried joyously. "I had forgotten all about him. I certainly must go over and pay him a call and find out where Mrs. Grouse is. My, how Strutter can drum!"