[Illustration: cover art]
THE MYSTERY SHIP
GLORIES OF SEA
AND AIR SERIES
By
PERCY F.
WESTERMAN
THE MYSTERY SHIP
THE RIVAL SUBMARINES
BILLY BARCROFT OF THE R.N.A.S.
A WATCH-DOG OF THE NORTH SEA
Publishers
PARTRIDGE
LONDON
["THE MYSTERY BOAT WAS MOVING SLOWLY, HER TRIPLE TORPEDO-TUBES READY WITH THEIR DEADLY COMPLEMENTS.">[