"What is it, Sammy?" cried George in alarm, while the others looked on with open mouths and sandwiches untasted.
"It must have gone down the wrong way!" exclaimed Frank.
Sammy shook his head vigorously at this although he could not speak.
"I'll thump him on the back," said George. "And you, Frank, run down the aisle and get a glass of water."
Frank ran to the water tank and was back in a moment. Sammy tried a swallow or two and was soon able to speak, though his eyes were streaming from coughing.
"Now tell us just what the matter was," said Bob with the greatest earnestness.
For reply Sammy glared at him.
"You're a nice one to ask that," he almost shouted.
Bob looked back at him in innocent surprise.
"What do you mean by that?" he demanded. "How is it my fault, Sammy, if you are so greedy that you bolt your food whole and almost choke yourself? You know that the teacher says you ought to take thirty-two chews with every mouthful."