TREASURY DEPARTMENT. 
Public Health and Marine-Hospital Service of the United States. 
Walter Wyman, Surgfeon-General. 
HYGIENIC LABORATORY.-BULLETIN No. 17. 
Nl. J. ROSEvN-A.X_J, Director. 
August, 1904. 
TO THE 
TREMATODE PARASITES OF MAN. 
CH. sxiles. 
WASHINGTON; 
GOVERNMENT PRINTING OFFICE. 
1904. 
