12 
TYPHOID FEVEE IX DISTEICT OF COLOMBIA. 
their present form, together wnth such recommendations as are pos- 
sible from a limited inquiry into so large a subject. 
With the facilities of the Hygienic Laboratory at our disposal it was 
hoped to advance the study of typhoid fever b^^ experimental investi- 
gations upon the life histoiA^ of the typhoid bacillus outside the bod}". 
The press of other matters, hovrever, prevented us from taking up this 
phase of the subject. The work will be continued, especially vdth a 
view of determining the presence or absence of the typhoid bacillus in 
the Potomac River water, in well waters, in milk, and other foods, and 
also to determine what percentage of the population may act as 
bacillus-carriers. 
Respectfully submitted. 
M. J. Rosexau, 
Director Hygienic Laboratory , Chairman, 
L. L. Llwisdex, 
Passed Assistant Surgeon, 
Joseph H. Kastle, 
Chief Division of Chemistry, Recorder, 
United States Public Health and Marine Hos^tal Service. 
