TYPHOID FEVEK IN DISTRICT OF COLUMBIA. 
125 
No. 
Location. 
Date. 
Num- 
ber of 
bac- 
teria 
per 
cubic 
centi- 
meters. 
Ferment in lac- 
bouillon. 
B. coli present. 
0.1 cc. 
1 cc. 
10 cc. 
0.1 cc. 
1 cc. 
10 cc. 
Northwest — Continued . 
1906. 
168 
Eighth, between Vamuni and Upshur . 
Aug. 22 
18 
— 
- 
— 
— 
— 
— 
440 
do 
Oct. 13 
2 


_ 
_ 
_ 
Southwest. 
53 
Seventh and H streets 
July 26 
1 
— 
— 
— 
— 
— 
— 
' 430 
do 
Oct. 12 
0 





L 
. .do 
July 21 
30 
107 
Sixth and G streets 
Aug. 9 
15 
— 
— 
— 
— 
— 
— 
432 
do 
Oct. 2 
5 



_ 
_ 
L 
.do 
July 21 
61 
108 
Half and T streets 
Aug. 9 
6 
— 
— 

— 
— 
460 
. .do 
Oct. 16 
5 

_ 
_ 
_ 
L 
. do 
July 21 
79 
110 
Third and D streets 
Aug. 9 
0 
— 
— 
— 
— 
— 
— 
333 
do 
Sept. 26 
2 
— 
- 
— 
— 
- 
— 
433 
. .do 
Oct. 12 
1 
_ 
_ 
_ 
_ 
L 
do 
July 21 
285 
186 
Second street and Virginia avenue 
Aug. 24 
9 
— 
— 
— 
— 
— 
434 
do 
Oct. 12 
0 


_ 
_ 
_ 
L 
do 
July 21 
57 
For details of chemical analyses of these well waters, see section 
XII, page 320. 
THE SHALLOW WELLS. 
By shallow” wells is understood those which are dug and lined 
with stone or brick work. The cylinder is usually 5 or 6 feet in 
diameter and rarely over 30 feet deep. We have studied water from 
63 such shallow wells used in the District for public water supply. 
Thirty-one of the 63 shallow wells gave indications of sewage pollu- 
tion upon both bacteriological and chemical analyses. We unhesi- 
tatingly recommend that these 31 wells be closed at once. They are 
as follows: 
No. 
Location. 
Northeast. 
24 
Fourth and E streets. 
38 
E street between Eighth and Ninth. 
135 
Eleventh and F streets. 
217 
Benning cross roads. 
218 
Benning School. 
225 
South Dakota avenue and Vista street. 
Northwest. 
8 
Tenth and N streets. 
9 
Tenth and K streets. 
13 
Third and Indiana avenue. 
No. 
Location. 
Northwest — Continued. 
15 
Massachusetts avenue between Sixth and 
Seventh streets. 
46 
In front of 1522 Wisconsin avenue. 
48 
Twenty-eighth and 0 streets. 
77 
Sixteenth and Corcoran streets. 
111 
New Jersey avenue and Pierce street. 
128 
Eighth street and Barry place. 
131 
New Jersey and Morgan avenues. 
169 
175 
Newton street east of Brightwood avenue. 
Thirty-third street and Wisconsin avenue. 
202 
Zoological Park pump. 
