One of these would-be-rugged segments of the American scene, in the saga of March Gable. Adolescence in a small Colorado town -- semipicaresque adventure through the Southwest and Mexico as an embryonic mining engineer -- all told with a certain zest and authenticity. As a picture of a family gone to seed, keeping the surface veneer of aristocracy, and of March Cable, symbolizing his generation as a sort of rebirth of the frontier spirit, it does not quite come off. The author weakens the force of his story by overemphasis and repetition.