TREASURY DEPARTMENT. 
Public Health and Marine-Hospital Service of the United States. 
Walter Wyman, Surgeon-General. 
HYGIENIC LABORATORY.— BULLETIN No. 19. 
A METHOD FOR INOCULATING ANIMALS 
WITH PRECISE AMOUNTS. 
M. J. ROSENAU, 
DIREiCXOR OF TTHF HYGIENIC LABORA'TORY. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1904. 
