134 
TYPHOID FEVER IN DISTRICT OF COLUMBIA. 
No. 128. 
Location. — Eighth and Barry place NW. (southwest corner). 
Kind . — Wood. 
Condition. — Old; rotten upper half; pije drain to sewer. 
Depth. — Below surface, 12J feet; water, feet. 
Sewer . — Depth, 6 feet; distance from well, 10 feet. 
Primes. — One within one block. (Our observation.) 
Bacteriologically. — Indicates sewage pollution; variable. 
Chemically . — Remote pollution. 
The following 9 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. 
428 
July 28 
July 20 
July 14 
July 30 
Aug. 5 
Sept. 3 
Sept. 20 
Oct. 1 
Frequently 
429 
do 
457 
Occasionally 
a 
473 
Frequently 
596 
do 
‘f 
742 
do 
? 
832 
Occasionally 
? 
894 
Frequently 
? 
930 
Oct. 13 
do 
? 
a This is the most suspicious grouping of cases among the persons using the water of any particular 
well. 
No. 130. 
Location. — North Capitol and Randolph streets (southwest corner). 
Kind. — Wood. 
Condition. — Good; pipe drain to sewer. 
Depth. — Below surface, 32 feet; water, 2 feet. 
Sewer. — Depth, ?; distance from well, 50 feet. 
Privies. — None within four blocks. 
Bacteriologically. — Fair. 
Chemically. — Unpolluted. 
No. 131. 
Location. — New Jersey avenue, opposite Morgan place NW. (west side). 
Kind. — Wood. 
Condition. — Good; pipe drain to sewer. 
Depth. — Below surface, 24 feet; water, 3 feet. 
Sewer. — Depth, ?; distance from well, 10 feet. 
Privies. — One within three blocks. 
Bacteriologically. — Indicates sewage pollution; variable. 
Chemically. — Remote pollution. 
The following 4 C'ses 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. 
231 
July 2 
July 3 
July 10 
Aug. 1 
Frequently . 
? 
312 
Occasionally. ... 
? 
320 
Frequently 
? 
484 
Occasionally 
?. 
