After that all of them boarded the ship, and they set out for Charleston, to drop Jethro—who would sooner or later hear from the two chums, as well as receive a fat reward for the part he had taken in rounding up the smuggler gang, and putting that mischievous radio out of the running—also turning over the two prisoners to the care of Mr. Herriott, as representative of the legal branch of the Government. What became of them Jack and Perk neither knew nor cared, as other equally thrilling happenings soon came along to occupy their time and attention, to the exclusion of matters that were now “has-beens,” hull down in the past.

They first of all turned over that admirable amphibian, the remodeled Curtiss cabin twin-motored ship, to the authorities; and when they left Charleston it was aboard their own familiar plane, the big Fokker. In some succeeding volume it may be taken for granted we shall again meet those two interesting aerial Soldiers of Fortune, Jack Ralston and Perk, doing their perilous stunts in some other field of adventure, the narration of whose exploits may form the basis of the next book in this Sky Detective Series.

THE END.