THE BOY ALLIES UNDER THE SEA

Or, The Vanishing Submarines

by

ENSIGN ROBERT L. DRAKE

Author of _The Boy Allies in the Baltic_, _The Boy Allies on the North
Sea Patrol_, _The Boy Allies Under Two Flags_, _The Boy Allies with the
Flying Squadron_, _The Boy Allies with the Terror of the Seas_

A.L. Burt Company New York

1916







[Illustration]




CHAPTER I.

A MYSTERY.