TYPHOID FEVER IN DISTRICT OF COLUMBIA. 
131 
No. 45. 
Location . — In front of No. 1614 Thirty-second street NW. 
Kind. — Wood. 
Condition. — Old; bricks loose at base; surface drainage to sewer. 
Depth . — Below surface, 20 feet; Avater, 3 feet. 
Sewer. — Depth, feet; distance from well, 20 feet. 
Privies . — None in block. 
Bacteriologically . — Fair. 
Chemically . — Remote pollution. 
The following 2 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. 
451 
July 24 
Aug, 17 
Occasionally 
9 
705 
do 
? 
No. 46. 
Location. — In front of 1522 Wisconsin avenue NW. 
Kind. — Wood. 
Condition. — Good; pipe drain to sewer. 
Depth. — Below surface, 24 feet; water, 4 feet. 
Sewer. — Depth, ?; distance from well, 30 feet. 
Privies. — None in block. 
Bacteriologically. — Indicates sewage pollution; variable. 
Chemically. — Remote pollution. 
' No. 48. 
Location. — Twenty-eighth and O streets NW. (northwest corner). 
Kind. — Wood. 
Condition. — Good; pipe drain to sewer. 
Depth. — Below surface, 30 feet; water, 4 feet. 
Sewer. — Depth, lOJ feet; distance from well, 0. 
Privies. — One in block. 
Bacteriologically. — Indicates sewage pollution. 
Chemically. — Remote pollution. 
The following 2 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— 
Prohahle source of 
infection. 
191 
June 10 
Frequently ... 
? 
779 
Sept. 2 
do 
? 
No. 57. 
Location. — Thirty-fourth street and Volta place NW. (northwest corner). 
Kind. — ^Wood. 
Condition. — Old; cracked; bricks loose at base; overflow at base when pumping. 
Depth . — Below surface, 23 feet; water, 2J feet. 
Sewer. — Depth, 9J feet; distance from well, 15 feet. 
Privies . — None within two blocks. 
Bacteriologically. — Fair, 
Chemically . — Remote pollution. 
