“Whatever for, father?”

“For your understudy here, of course.”

The king’s expression just then indicated that he did not consider that his son was a lightning calculator.

“Don’t you get the idea, Ernie?”

“I think I begin to,” said the prince; “and, father, I don’t like it.”

The king shrugged well-nourished shoulders.

“It’s the only way,” he said. “We can’t risk even the appearance of slighting that touchy old hippopotamus.”

“Hippopotamus, father? I was not aware——”

“Oh, I mean that venerable muffin, the Emperor of Zabonia,” cut in the king with a trace of impatience.

“But, father,” said the prince, and his eyes showed that he was shocked, “he is a king!”