Donal Haines has contributed a number of first rate books to the shelves of school stories. Now in this his appeal is somewhat more mature, for young Langford is of college graduate age, enters the Army Air Corps Training School, graduates (after gruelling experiences) and goes into an airplane factory as test pilot, after two required years in the service. The climax of the story comes when Langford makes good in the experiment with which his grandfather had failed, back in 1903. A first rate story for older boys and men. The training school section is particularly well done.