TYPHOID FEVEP IFT DISTRICT OF COLUMBIA. 
47 
Cellar or hasement at residence. 
No cellar or basement 359 
Cellar in good condition 46 
Cellar damp, but otherwise good 43 
Cellar damp and poorly A'entilated 58 
Basement in good condition 124 
Basement damp, but otherwise good 64 
Basement damp and poorly ventilated 20 
Cellar or basement not noted* 33 
Total 747 
DISPOSAL OF SEWAGE. 
Of the 747 cases 671 lived at residences connected with the city 
sewerage S37-stem and at which there were water-closets, 72 lived at 
residences not connected with the city sewerage s^^stem and at which 
there were prunes, 2 at residences not connected with the city sew- 
erage s^rstem and at which there were neither water-closets nor 
privies, and 1 at a residence not connected vdth the city sewerage 
s^^stein, but havuig water-closets which discharged into a cesspool. 
One was at a residence where the method of disposing of sewage was 
not noted. 
Of the cases Ihdng at residences connected with the city sewerage 
system 240 were at residences having water-closets in the house only, 
257 at residences having water-closets in the yard only, and 174 at 
residences having water-closets in both house and }^ard. Thirty-two 
of the cases occurred at residences where seepage from the privies 
into the well or spring appeared to be possible. 
SCREENS. 
Two hundred and sixty cases occurred among persons living in 
houses that were well screened, 390 in houses that were not screened, 
94 in houses that were screened in part, and 3 in houses where the 
screening was not noted. 
INSECTS AND VERMIN. 
FLIES. 
Eleven cases occurred among persons living in houses where there 
were practically no flies, 287 in houses where there were few, 367 in 
houses where there were flies in moderate number, 40 in houses 
where there were many, 39 in houses where they were swarming, 
and 3 in houses where the number was not noted. 
