IOWA ACADEMY OF SCIENCES. 
263 
BRILEY SHALLOW WELL. 
Depth, 45 feet; 18-inch glazed tile, cemented at the joints, 
covered with boards on top. The well has not been used 
since October 20th. 
DATE. 
GAS TEST. 
Total number 
bacteria per 
CC. 
GELATINE. 
Agar. 
LITMUS AGAR. 
Lique-fy- 
4ng. 
Non-lique- 
fying 
October 17th 
October 18th 
Present .... 
18.000 
12.000 
6. 000 
1,440 
2.000 
2,400 
125 
125 
Used. 
Used. 
Used. 
Used. 
Used. 
Used. 
Some acid- pro- 
ducing germs. 
October 25th .. 
October 25th 
October 25th 
October 25th .... 
October 29th 
First pumping 
One-half barrel pumped 
One barrel pumped 
1^ barrel pumped 
Present 
BRILEY DEEP WELL. 
Depth, 185 feet; 2-inch pipe and casing. 
October 
17th 
60 
Used. 
No acid-produc- 
October 
17th 
None 
3o 
ing germs. 
October 
18th 
None 
3o 
October 
27th 
30 
Used 
October 
29 th 
30 
PRITCHARD WELL AND TANK — WELL. 
Depth, 170 feet; 8-inch casing well and inside a 2-inch 
pipe. 
October 18th 
20 
October 22d 
30 
3° 
Used. 
October 29th 
20 
20 
Non - acid - pro- 
October 18th 
60 
20 
40 
ducing. 
TANK. 
Open tank used for watering stock, above well. 
October 29th 
40 
160 
October 29th 
2 % cc 
October 31st 
225 
225 
October 29th 
3/4 cc 
Acid reaction. 
