equations, plane geometry, descriptive geography, physical
geography, United States history and the outlines of general
history."

"I think I'll go if that's all," laughed John, who was well known
to have troubles with most of his examinations in school.

"Look at that boat over yonder!" suddenly interrupted Fred,
pointing to a motor-boat about one hundred feet away. "It looks
to me as if it was trying to pass us."

"That's just what it is trying to do," said Grant eagerly.

"Don't you let them do it, Peewee."

"That's just what I intend not to do," said Fred resolutely.

In a moment the speed of the Black Growler was increased, but it
was also manifest as the boys glanced behind them that the boat
they had noticed was in swift pursuit.


CHAPTER III

JOHN DISAPPEARS

The rival boat was distant about one hundred feet, moving in a
line nearly parallel with that which the Black Growler was
following.