The authors of this book are neither physicians nor psychologists, but professionally have been trainers of voice for singing and speaking. In their especial work they have been well known and highly respected in England for many years. But the elocutionary teacher is in this day not fully competent to enlighten the world on subjects that require for their complete understanding a broad knowledge of both medicine and psychology. While this book contains interesting, but mostly long known, ideas on stammering, especially on the peripheral side, the important modern psychoneurologic point of view is almost entirely ignored, and the anatomico-physiologic knowledge displayed is far from exact or reliable. The book is not a complete or safe guide to the layman, or a reliable treatise for the physician.