122 
TYPHOID FEVER IH DISTRICT OF COLUMBIA. 
Xo. 110. 
Location. — Third and D streets SW. (northwest corner). 
Kind. — Iron. 
Condition. — Fair; pipe drain to sewer. 
Depth. — Deep; below surface, 96 feet; water, 81 feet. 
Sewer. — Depth, 11 feet; distance fi’om well, 12 feet. 
Privies. — Seven in block; 5 within two blocks. 
Bacteriologically . — Good. 
Chemically. — Unpolluted. 
Xo. 186. 
Location. — Second street and Virginia avenue SW. (northwest comer). 
Kind. — Iron. 
Condition. — Fair; pipe drain to sewer; very dirty surroundings, due to building 
railroad along Virginia avenue. 
Depth. — Deep; below surface, 146 feet; water, 131 feet. 
Sewer. — Depth, 8 feet; distance from well, 20 feet. 
Privies. — One in block; 12 in surrounding blocks. 
Bactei'iologically . — Good. 
Chemically . — U npollut ed . 
The following 3 cases of t^’phoid fever drank the water of this well: 
Case 
No. 
Onset of 
disease. 
During ttie 30 days preceding onset of disease used the well water — 
Probable source of 
infection. 
203 
June 23 
Occasionally 
O 
253 
July 1 
do 
O 
677 
Aug. 22 
Habitually 
0 
DEEP WELLS SOUTHEAST SECTION. 
Xo. 138. 
Location. — Eighth and I streets SE. (northeast corner). 
Kind. — Iron. 
Condition. — Old; rotten; pipe drain to sewer. 
Depth. — Deep; below surface, 97 feet; water, 32 feet. 
Sewer. — Depth, 9 feet; distance from well, 50 feet. 
Privies. — One in opposite block. 
Bacten'iologically . — Good; practically sterile. 
Chemically. — Unpolluted. 
The following 3 cases of t\^hoid 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. 
445 
July 28 
Aug. 3 
Oct. 5 
Occasionally 
9 
468 
do 
9 
959 
Frequently 
9 
Location. — Tenth street and South Carolina avenue SE. (southeast corner;. 
Kind. — ^^Vood. 
Condition. — Out of order. 
