138 
TYPHOID FEVER IH DISTRICT OF COLUMBIA. 
No. 40. 
Location . — Eighth and A streets NE. (southwest corner). 
Kind . — “Wood. 
Condition. — Old, rotten lower third; pipe drain to sewer. 
Depth . — Below surface, 22 feet; water, 6 feet. 
Sewer. — Depth, 8 feet; distance from well, 10 feet. 
Privies. — None within three blocks. 
Bacteriologically. — Fair. 
Chemically. — Polluted. 
The following case of typhoid fever drank the water of this well; 
Case 
No. 
Onset of 
disease. 
During the 30 days preceding onset of disease used the well water — 
Probable source of 
infection 
759 
Sept. 1 
Habitually 
9 
No. 109. 
Location. — North Capitol, between B and C streets NE. 
Kind. — Wood. 
Condition. — Good; pipe drain to sewer. 
Depth. — Below surface, 27J feet; water, 3 feet. 
Sewer. — Depth, ?; distance from well, 50 feet. 
Privies. — One in same block; 1 school with Smead system within two blocks. 
Bacteriologically . — Fair. 
Chemically. — Remote pollution. 
No. 129. 
Location. — Keating place, between Lincoln avenue and First street NE. (north side). 
Kind. — ^Wood. 
Condition. — Old; rotten; mounted on brick base, some of the bricks being loose; 
surface drainage to sewer. 
Depth. — No data. 
Sewer. — Depth 9^ feet; distance from well, 20 feet. 
Privies. — None within three blocks. 
Bacteriologically. — Good. 
Chemically. — Remote pollution. 
No. 135. 
Location. — Eleventh and F streets NE. (northwest comer). 
Kind. — ^IVood. 
Condition. — Fair; pipe drain to sewer. 
Depth. — Below surface, 20 feet; water, 8 feet. 
Sewer. — Depth, 10 feet; distance from well, 50 feet. ^ 
Privies. — One in opposite blocb. 
Bacteriologically . — Indicates sewage pollution; variable. 
Chemically. — Remote pollution. 
The following case of typhoid fever drank the water of this well; 
Case 
No. 
Onset of 
disease. 
During the 30 days preceding onset of disease used the well water — 
Probable source of 
infection. 
801 
Sept. 13 
Habitually 
