124 
IOWA ACADEMY OF SCIENCES 
TABLE VI. 
BACTERIOLOGICAL TEST OF WELLS AND WATER SUPPLIES, 
GRINNELL, AND DES MOINES, IOWA. 
Locality. 
Source of Water. 
1st Pumping. 
2nd Pumping. 
1st 
Agar. 
2nd 
Agar. 
83 
be 
-<] 
00 
2nd 
Agar. 
Grinnell .. 
Bliss, Mr. , private well . 
50 
1400 
80 
19C0 
Grinnell .. 
Kingston, Mr., private well 
160 
3500 
Grinnell . 
Jenkins, Mr., private well 
100 
150 
3500 
" 3500 
Grinnell . 
Tap wat er, collected 1 min ., 5 min. and 10 min . 
100 
80 
60 
Grinnell .. 
Cistern, city supply 
10 
10 

Grinnell . . 
Effluent of cistern, city supply 
10U 
1000 
Grinnell .. 
Soft water for boilers, city main 
510 
270 
Grinnell .. 
Inflow, city cistern . 
0 
0 
Des Moines 
Shallow well, Walnut street . 
400 
7500 
Des Moines 
Artesian well, 360 feet deep .... 
400 
50 
TABLE VII. 
BACTERIOLOGICAL TEST OF WATER FROM COLLEGE CREEK, 
I. S. C. 
Date. 
Point. 
1st Agar. 
2nd Agar. 
1st Glu. Ag. 
bi 
3 
-d 
s 
<M 
1st Lit. Ag. 
2nd Lit. Ag. 
1st Gelatin. 
2nd Gelatin. 
1st Lit. Gel. 
2nd Lit. Gel. 
*Jan. 15,1904 
Above the inflow of Colo- 
nial House sewage. 
I 
1100 
3500 
140 
350 
50 
70 
60 
0 
0 
*Jan. 15, 1904 
Below the Colonial 
House. 
II 
510 
1320 
670 
620 
160 
110 
10 
0 
10 
0 
*Jan. 15, 1904 
Bv the President’s 
House. 
Ill 
80 
100 
220 
3200 
55800 
700C0 
10 
0 
0 
0 
-Jan. 15, 1904 
Below the College 
sewer. 
IV 
4900 
3500 
1460 
1220 
2330 
6300 
10 
0 
0 
0 
•fMar.30,1904 
Above the inflow of Colo- 
nial House sewage. 
I 
46000 
80500 
54000 
72000 
51000 
102000 
92000 
62000 
90C0 
fMar.30,1904 
Below the Colonial 
House. 
II 
600C0 
52000 
24000 
91000 
84000 
90000 
105000 
86000 
fMar.30,1904 
By the President’s 
House. 
III.. 
70000 
80000 
90000 
80000 
810C0 
70000 
tMar.30,1904 
Below the College 
sewer. 
IY 
25000 
45000 
22000 
25000 
90000 
92000 
10000 
45000 
*ice. t Flood. 
