“Don Hale with the Flying Squadron” is the third of the “Don Hale Stories.” It follows “Don Hale in the War Zone,” and “Don Hale Over There,” and tells what happens to Don after he relinquishes his dangerous post as an ambulance driver for the Red Cross on the western front.

But Don’s new duties are of a far more dangerous nature; and during his training in the aviation school and after he finally becomes a full-fledged member of that most famous of all flying squadrons, the Lafayette Escadrille, he has interesting experiences and enough exciting adventures to last even the most spirited youngster an entire lifetime.

It may be safely said, however, that the account is not overdrawn; indeed, in the air service, in which most valiant deeds have been performed, it would be hard to exaggerate the perils which beset the “cavalry of the clouds” on every side.

To add to the interest of Don’s experiences with the escadrille there is a certain mystery connected with several characters which is not solved until the end of the story.

In the next book of the series, “Don Hale with the Yanks,” is told the further adventures of the young combat pilot after he has been transferred to the American air service. He sees much of that memorable conflict—one of the turning points of the great war—when, at Chateau Thierry, the German drive for Paris was halted by the victorious Americans.

W. Crispin Sheppard.