By H. IRVING HANCOCK

PRICE, $1.00 EACH

No more efficient officers ever paced the deck of a man-o'-war than Dave Darrin and Dan Dalzell. The last two volumes chronicle the experiences of Dave and Dan in the great war.

1. DAVE DARRIN AT VERA CRUZ; or, Fighting With the U. S. Navy in Mexico.

2. DAVE DARRIN ON MEDITERRANEAN SERVICE; or, With Dan Dalzell on European Duty.

3. DAVE DARRIN'S SOUTH AMERICAN CRUISE; or, Two Innocent Young Naval Tools of an Infamous Conspiracy.

4. DAVE DARRIN ON THE ASIATIC STATION; or, Winning Lieutenants' Commissions on the Admiral's Flagship.

5. DAVE DARRIN AND THE GERMAN SUBMARINES; or, Making a Clean-up of the Hun Sea Monsters.

6. DAVE DARRIN AFTER THE MINE LAYERS; or, Hitting the Enemy a Hard Naval Blow.