XX PREFACE AND SUMMARY OF CONTENTS. 



quoted very frequently in this volume, namely: Prof. Michael 

 Foster's "Physiology" and Prof. Horatio C. Wood's "Therapeu- 

 tics/' two masterpieces of their kind. Experimental therapeu- 

 tics, with which Professor Wood's name is so intimately asso- 

 ciated, afforded information which not only proved invaluable 

 in the course of our inquiries, but without which several of the 

 more important conclusions submitted could hardly have been 

 reached. Indeed, while foreign countries, especially France, 

 Germany, Great Britain, Italy, and Kussia, have contributed 

 the greater part of the evidence which has formed the ground- 

 work of our deductions, much of the best and soundest work 

 quoted, we are pleased to state, originated in our own country. 



The subjects treated in this volume appear in the order 

 in which they were studied. The many new lines of thought 

 discussed could thus be made to start with familiar facts and 

 be gradually developed. The earlier data and deductions sub- 

 mitted, therefore, should only be considered by the reader as 

 inherent factors of conclusions to be reached later on. 



Brown-Sequard's labors may be said to have laid the 

 foundation of this work. We little thought, when we met him 

 last, at the Institute of France, that the only expression of 

 gratitude available to us when this volume would be finished, 

 would be a dedication to his memory! 



Special pharmacodynamics and physiological pathology, 

 both subdivisions of Applied Therapeutics (a department of 

 Medicine to which we expect to devote our special attention, 

 henceforth, both in our practice and in research work), will be 

 considered in the second volume, which will appear a few 

 months after the present one. The latter will also contain 

 an Analytical Index, in which the modifications in prevailing 

 doctrines that our labors may have suggested will be system- 

 atically arranged. 



Our thanks are due to our publishers, the F. A. Davis 

 Company, and to the manager of their printing department, 

 Mr. Van Horn, for the care given to the mechanical prepara- 

 tion of this work. 



C. E. DE M. SAJOUS. 

 PHILADELPHIA, 

 January 1, 1903. 



