This book is in real sense a key to homeopathic materia medica. The book is divided into three parts: 1) An 80 page repertory; 2) A 215 page Materia Medica which is laid out in physiological spheres of activities with modalities and relationships; 3) 110 page section of 4 appendices. It has a fascinating layout and concept. Each of the 323 remedies is presented in concise and clear words. In Boger's layout you can easily see which remedy affects which specific part of the remedy. Here, at a glance, this all is available. This book intends to make the general expression or genius of each remedy, thereby helping the prescriber to correct the manner of his practice. The repertory is too instructive in its own way and many hints can be gleaned from its unusual layout. It can also be applied as the "supplemental reference table". The repertory section is divided into four categories: a) The periods of aggravation (times); b) Conditions of aggravation and amelioration; c) Generalities (sensations and general conditions); d) Regional repertory (parts of the body affected).