TREASURY DEPARTMENT 
Public Health and Marine-Hospital Service of the United States 
HYGIENIC LABORATORY.— BULLETIN No. 57 
September, 1909 
I. THE PRESENCE OF TUBERCLE BACILLI IN THE 
CIRCULATING BLOOD IN CLINICAL AND 
EXPERIMENTAL TUBERCULOSIS 
By 
JOHN F\ ANDERSON 
II. THE VIABILITY OF THE TUBERCLE BACILLUS 
By 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1909 
