“This is awful!” cried Coulter. “Why, what in the world is the matter with it?”

“Say, Ferris, what did you do to that coffee?” demanded Ritter, striding up to the cadet who had made the beverage.

“I boiled it, that’s all,” answered Ferris. “It’s good, too,” he added.

“Did you put in some baking powder?” sneered Baxter.

“Not at all,” and now Ferris himself tasted some of the coffee he had in his pot. “Why, that’s fine.”

“Give me another cup of it,” said Baxter.

It certainly looked good and he put in some milk. Then he added the sugar as before. At once the coffee bubbled and foamed worse than before.

“Look there!” he cried, rushing forward with the coffee running over the cup and on to the ground. “What do you say to that?”

“Hullo, Baxter has got Mount Vesuvius brand of coffee!” cried Andy.

“Why don’t you bottle it for mineral water?” asked Pepper.