E pur si muove. The author, clinical instructor in neurology at the University of Colorado, has gone so far as to accept the mental genesis of stammering; he agrees that it is not due to any disturbance in the physical mechanism. There is no indication that he has moved further; he does not seem to have heard of unconscious mental processes; Coriat's work on stammering, for instance, is not mentioned. The treatment advocated is mental drill of the usual kind with varieties in technique, apparatus, and so on, that every special trainer finds it necessary to introduce.

The method is especially adapted for class instruction. The author claims, like all other special trainers, that the methods are effectual with children but admits that they are not infallible. The book is written for school use and the methods will no doubt be tried by teachers when other methods are wearing thin.