TREASURY DEPARTMENT. 
Public Health and Marine-Hospital Service of the United States. 
Walter Wyman, Surgreon-General. 
HYGIENIC LABORATORY— BULLETIN No. 19. 
October, 1 
A METHOD FOR INOCULATING ANIMALS 
WITH PRECISE AMOUNTS. 
BY 
Ni. j. rose:nau;, 
DIRECTOR OR THE HYGIEISIIC LABORATORY. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1904. 
