BULLETIN No. 6 OF THE HYGIENIC LABORATORY, 
Treasury Department, U. S. Marine- Hospital Service, 
WALTER WY3LVN, Surgeon-General. 
SEPTEMBER, 1901. 
Disinfection Against Mosquitoes 
WITH 
FORMALDEHYD AND SULPHUR DIOXID. 
M. J. ROSENAU, 
Passed Assistant Surgeon, Director hygienic Laboratory, 
U. S. MARINE-HOSPITAL SERVICE. 
WA^SHING-TON, U. C. 
i 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
. “ 1901 . 
