THE JOHNS HOPKINS UNIVERSITY 

 SCHOOL OF HYGIENE AND PUBLIC HEALTH 



DIAGNOSIS OF PROTOZOA 



AND 



WORMS PARASITIC IN MAN 



BY 



ROBERT W. HEGNER 



Associate Professor of Protozoology 



AND 



WILLIAM W. CORT 



Associate Professor of Helminthology 



DEPARTMENT OF MEDICAL ZOOLOGY 



SCHOOL OF HYGIENE AND PUBLIC HEALTH 



THE JOHNS HOPKINS UNIVERSITY 



1921 



BALTIMORE, MARYLAND 

 U. S. A. 



