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PREFACE TO FOURTH EDITION. 



A fourth edition of the Compend of Physiology having been called for, 

 the author -has taken the opportunity to revise many of the sections, to 

 insert a few figures, and to add some ten pages of additional matter, which, 

 it is hoped, will make the book more complete and increase its usefulness 

 to the student. 



1210 Race Street. A. P. BRUBAKER. 



PREFACE TO SECOND EDITION. 



This Compend of Physiology is the outgrowth of the author's system of 

 examinations in the Quiz room during a number of years, and was written 

 at the request of medical students who desired a compadt and convenient 

 arrangement of the fundamental facts of human physiology. As most 

 medical students enter upon the study of physiology before they have ac- 

 quired a thorough knowledge of anatomy, it was thought desirable that such 

 anatomical details should also be inserted as would be essential to a clear 

 conception of the functions about to be studied. It was believed that it 

 would be practically useful to students during their attendance upon lectures 

 and in reviewing the subject prior to examinations. The fact that during 

 the first year after its publication the first edition has been exhausted, 

 proves that it has met the needs of students. 



In preparing a second edition the author has carefully revised the en- 

 tire work, and inserted some fifteen pages of additional matter, which it is 

 hoped will still further increase the usefulness of the book. 



To those teachers of physiology who have kindly noticed and recom- 

 mended the Compend to their students I tender my thanks, and trust that 

 in its improved condition it will continue to merit their approval. 



ALBERT P. BRUBAKER. 



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