TYPHOID FEVEE IK DISTRICT OF COLUMBIA. 
133 
No. 77. 
Location. — Sixteenth and Corcoran streets NW. (northwest corner). 
Kind. — Wood. 
Condition. — F air. 
Depth. — Below surface, 26 feet; water, 3 feet. 
Sev:er. — Depth, 9| feet; distance from well, 15 feet. 
Privies. — None in block; 3 within two blocks. 
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. 
194 
J Line 1 
Occasionally 
? 
No. 111. . 
Location. — New Jersey avenue and Pierce street NW. (southeast corner). 
Kind. — Wood. 
Condition. — Old; somewhat rotten; bricks loose at base; pipe drain to sewer. 
Depth. — Below surface, 18 feet; water, 4 feet. 
---Depth, 4 feet; distance from well, 0. 
Privies. — Five in opposite block. 
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. 
493 
Aug. 6 
Frequently 
No. 127. 
Location. — Twelfth street and Florida avenue NW. 
Kind. — ^Wood. 
Condition. — Old; bricks loose at base; pipe drain to sewer. (Broken, October 6, 
1906.) 
Depth. — Below surface, 15 feet; water, 2 feet. 
Sewer. — Depth, 11 feet; distance from well, 20 feet. 
Privies. — Three within two blocks; none in same block. 
Bacteriologically. — Good. 
Chemically . — U npolluted . 
The following 3 cases 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. 
431 
July 28 
Sept. 11 
Oct. 4 
Frequently 
? 
816 
do 
? 
941 
Occfl.sionfllly 
? 
