142 
TYPHOID PEVEE IN DISTKICT OF COLUMBIA. 
No. 102. 
Location. — In front of 220 Seventh street, between B and C, SE. 
Kind. — ^Wood. 
Condition. — Relatively new; bricks loose at base; pipe drain to sewer. 
Depth. — Below surface, 27 feet; water, 4 feet. 
Sewer. — Depth, 8 feet; distance from well, 50 feet. 
Privies. — None within three blocks. 
Bacteriologically . — Qood. 
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. 
436 
July 21 
Frequently... ... 
•? 
No. 103. 
Location. — Eighth and D streets SE. (northwest corner). 
Kind. — ^Wood. 
Condition. — Old; rotten at base; bricks loose at base; pipe drain to sewer. 
Depth. — Below surface, 28 feet; water, 3 feet. 
Sewer. — Depth, 10 feet; distance from well, 10 feet. 
Privies. — None in block; 1 within two blocks. 
Bacteriologically. — Fair. 
Chemically. — Remote pollution. 
No. 116. 
Location. — ^Jefferson street between Monroe and Fillmore SE. (north side). 
Kind. — Wood. 
Condition. — Old; rotten; bricks loose at base; surface drainage to sewer. 
Depth. — Below surface, 17^- feet; water, 4\ feet. 
Sewer. — Depth, 10 feet; distance from well, 0 foot. 
Privies. — One in opposite block. 
Bacteriologically. — Good. 
Chemica I ly . — Polluted . 
No. 117. 
Location. — Fillmore and Jackson streets SE. (southwest corner). 
Kind. — ^Wood. 
Condition.— Good] pipe drain to sewer. 
Depth.- — -No data. 
Sewer. — -Depth, IO 2 feet; distance from well, 20 feet. 
Privies. — One in block; 2 within one and one-half blocks. 
Bacteriologically . — Good. 
Chemically. — Remotely 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. 
480 
July 17 
Occa sionally. . 
9 
