INTRODUCTION TO 



INFECTIOUS AND 

 PARASITIC DISEASES 



INCLUDING 



THEIR CAUSE AND 

 MANNER OF TRANSMISSION 



BY 



MILLARD LANGFELD, A.B., M.B., (Johns Hopkins) 



Professor of Bacteriology and Clinical Medicine, John A. Creighton Med- 

 ical College, Omaha; Visiting Physician, St. Joseph's and Douglas 

 County Hospitals, and Bacteriologist, the Omaha City 

 Board of Health. 



With an Introduction by Lewellys F. Barker, Professor of 

 Medicine at the Johns Hopkins University 



WITH THIRTY-THREE ILLUSTRATIONS 



PHILADELPHIA 



P. BLAKISTON'S SON & CO. 



1012 WALNUT STREET 

 1907 



