This book has emanated from a desire to satisfy the demands made by my pupils, and it has been prepared to meet the present needs of the student and of the general practitioner. It is hoped that the volume may prove of practical value, although it does not attempt to furnish more than a working introduction to the department of medicine under discussion. It is, however, designed as a practical guide, and the methods de scribed are such as can be carried out with a minimum of com plicated apparatus. Special attention has been given to outlining in progressive steps the various procedures in clinical technic, such steps being illustrated whenever possible. Besides the detailed descriptions of methods of examination, the diagnostic significance of the clinical findings is given under special headings and is ire quently accompanied by tables of differentiation.