TRANSLATOR'S PREFACE. 



The subject of serum diagnosis and therapy, 

 already grown to considerable proportions, is con- 

 stantly increasing in importance. The lack in our 

 language of any simple and concise exposition of 

 the subject has led the translator to make this 

 excellent treatise of Prof. A. Wassermann more 

 readily accessible to the English-reading medical 

 public. The presentation of the subject follows 

 the author's course of lectures given at the Uni- 

 versity of Berlin in 1903. No changes whatever 

 have been made in the translation. A table of 

 contents has, however, been added. 



C. B. 



BROOKLYN, January, 1904. 



