Table IV.
Results of the Bacteriological Examination of the Fokfulum Water Supply for the year 1918.
Date. Rate of Filtration. Total Colonies on Agar in 1 cc. MacConkey's Lactose Neutral Red Bile Salt Peptone Water. Presence of the Coli Group. 1 cc. 2 cc. 5 cc. 10 cc. 20 cc. 50 cc. Unfiltered, Filtered, 7-1-18. 45 Unfiltered, 7-1-18. 294 Filtered, 9-1-18. 20 Filtered, 9-1-18. 294 Unfiltered, 11-1-18. 50 Filtered, ... 11-1-18. 294 Unfiltered, 8-4-18. 125 Filtered, ... 8-4-18. 325 Unfiltered, 10-4-18. 100 Filtered,...! 10-4-18. 325 Unfiltered, 12-4-18. 80 Filtered, 12-4-18. 325 Unfiltered, 8-7-18. 50 Filtered, 8-7-18. 700 Unfiltered, 10-7-18. 50 Filtered, 10-7-18. 650 Unfiltered, 12-7-18. 30 Filtered, 12-7-18. 525 Unfiltered, 7-10-18. 45 Filtered, ... 7-10-18. 500 Unfiltered, 9-10-18. 40 Filtered, 9-10-18. 500 Unfiltered, 11-10-18. 50 + + + + + + Filtered, Group II in 1 cc. 11-10-18. 625 + + + + + + Unfiltered, Group II in 50 ccs.All samples taken either immediately before or immediately after filtration. The rate of filtration is given by the Water Authority in gallons per square yard per day. Classification of the Coli Group is that of MacConkey, + Acid and Gas;
Acid only;
= No change.
M72