TREASURY DEPARTMENT. 
Public Health and Marine-Hospital Service of the United States. 
Walter Wyman. Surgreon-General. 
HYGIENIC LABORATORY.— BULLETIN No. 8. 
NIAs^r^CIT, 1904. 
LAl^ORATORY COl'RSl: 
IX 
rATlIOLOGY AND BACTI';RIOLOG'i 
( I'iEVISEIO E13IXIOX) 
BY 
M. J. 1^0SKX.NXT, 
OIRECXOE OE HYGIEXIC L^VBOE^TOW V. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1904. 
