> DO <OU_1 64074 A' . . I '.....', I &4*J * ' PHYSICAL CHEMISTRY IN THE SERVICE OF MEDICINE SEVEN ADDRESSES BY DR. WOLFGANG PAULI Privatdoccnt inInternal Medicine' at the University vj Vienna AUTHORIZED TRANSLATION BY DR. MARTIN H. FISCHER Processor oj Pathology at the Oakland College of Medicine FIAST EDITION FIRST THOUSAND NEW YORK JOHN WILEY & SONS LONDON: CHAPMAN & HALL, LIMITED . 1907 Copyright, 1906 BY MARTIN H. FISCHER ROBERT DRUMMOND, PRINTER, NEW YORK AUTHOR'S PREFACE. THE addresses which have been collected for the first time in this volume and which were delivered in the main as summaries of my own special investigations concern themselves with the application of physical chemistry to different fields in medicine as rendered possible more particularly through advances in the physics and chemistry, of organic colloids. In that questions in physiology as well as pathology and pharmacology are touched upon, it m^y perhaps be hoped that different circles of medical men may be interested in the problems discussed in this volume. The translated addresses differ in only a few unimpor- tant abbreviations from the original. The development of the guiding thought common to all of them stands out quite clearly. Its foundation is the extensive parallelism between the laws which govern changes in the colloidal state in vitro and in the living organism. Even though the future may become acquainted with many a new fact through which the questions discussed in this volume may be made to appear in a different light, it will scarcely be possible to belittle the fruitful- ness of the methods described and the stimulating effect iii iv AUTHORS PREFACE. of the results obtained through them. Since all the results that these methods can yield are as yet by no means attained it is hoped that the volume may be looked upon as a modest attempt to win friends capa- ble of work in this still young field of labor. WOLFGANG PAULI. VIENNA, May if 1906.