Table IV.
Results of the Bacteriological Examination of the lohfulum Water Supply for the year 1914.
Rate Total Colo- MacConkey's Lactose Neutral Red Bile Presence of the Coli Group. of nics on Salt Peptone Water. Filtration. Filtraat 37°C. for Negative in 2 cc. Sample. 24 hours. 1 cc. Date. Agar in 1 cc 2 cc. 5 cc. 10 cc. 20 cc. 50 cc. Unfiltered, 5-1-14. 140 ++++++++++++ Group IV in 1 cc. Negative in 50 cc. Filtered, 5-1-14. 500 + + + + + + + Negative in 50 cc. Unfiltered, 7-1-14. 110 +++ +++ + Groups I and III in 2 cc. Negative in 50 cc. Filtered, 7-1-14. 325 + + + + + Negative in 50 cc. Unfiltered, 9-1-14. 120 +++ +++ Groups III in 1 cc. Negative up to 50 cc. Filtered, 9-1-14. 325 + + + + Groups IV in 1 cc. Negative in 50 cc. Unfiltered, 6-4-14. 125 ... Group II in 1 cc. Filtered, 6-4-14. 325 + + + III in 20 cc. Unfiltered, 8-4-14. 105 + + + II in 11 cc. Filtered, 8-4-14. 325 + + Negative in 50 cc. Unfiltered, 10-4-14. 115 + + + Group IV in 2 cc. Negative in 10 cc. Filtered, 10-4-14. 325 + Group II in 1 cc. Unfiltered, 6-7-14. 150 + + + + 1 in 20 cc. Filtered, 6-7-14. 570 + + + Negative in 50 cc. Unfiltered, 8-7-14. 120 + + + Filtered, 8-7-14. 570 + + Unfiltered, 10-7-14. 110 + + + Filtered, 10-7-14. 450 + Unfiltered, 5-10-14. 85 + + Filtered, 5-10-14. 625 + Unfiltered, 7-10-14. 80 + + Filtered, 7-10-14. 555 + Unfiltered, 9-10-14. ΤΟ Filtered, 9-10-14. 450 + ... ... ... ...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; L Acid only;
+ No change,