PREFACE TO SIXTH EDITION. 



It has been deemed advisable in the preparation of a Sixth Edition of 

 the Compend to insert a number of additional paragraphs upon subjects 

 which appeared to be of interest and importance to medical students. 



This has accordingly been done, with the result of increasing the size of 

 the book some fifteen pages. It is hoped that the present edition will even 

 more fully meet the needs of the student. 



ALBERT P. BRUBAKER. 



