PREFACE. 



THE great importance of amoebic infections of 

 the intestine and liver in man, and the frequency 

 with which such infections occur in our tropical pos- 

 sessions, render a work upon the parasitic amoebae 

 of man of interest to the medical profession of the 

 United States, especially as recent investigations have 

 proven that amoebic dysentery is by no means rare, 

 even in the temperate regions of our own country. 

 Much of the literature treating of this subject is in 

 German, French, and Italian, and but little of it 

 has been translated into English, while nearly all 

 of the recent work done upon the differentiation of 

 species of amoebae has been accomplished by German 

 investigators, and published only in German period- 

 icals and books. No monograph has appeared in 

 English giving in detail the work accomplished by 

 numerous students of the amoebae which are parasitic 

 in man, and for this reason I have thought that such 

 a work would prove of value to the profession of 

 this country, especially to medical officers of the 

 Army, Navy, and Marine Hospital Service, and to 

 public health officers, as well as to physicians prac- 

 ticing in the infected portions of the United States. 



W97? 



