Table II.
Results of the Bacteriological Examination of the Kowloon Water Supply for the year 1918.
Rate Total Colo- MacConkey's Lactose Neutral Red Bile Presence of the Coli Group. Sample. Date. Agar in 1 cc Filtra-tion. 37°C. for 24 hours. to 1 cc. 2 cc. 5 cc. 10 cc. 20 cc. 50 cc. Unfiltered, 8-1-18. 40 + + + + + + Filtered, 8-1-18. 540 10 + + + + + + Unfiltered, 10-1-18. 25 + + + + + + Filtered, 10-1-18. 496 5 + + + + + + Unfiltered, 12-1-18. 30 + + + + + + Filtered, 12-1-18. 504 10 + + + + + + Unfiltered, 9-4-18. 50 + + + + + + Filtered, 9-4-18. 488 30 + + + + + + Unfiltered, 11-4-18. 70 + + + + + + Filtered, 11-4-18. 470 40 + + + + + + Unfiltered, 13-4-18. 70 + + + + + + Filtered, 13-4-18. 476 35 + + + + + + Unfiltered, 9-7-18. 35 + + + + + + Filtered, 9-7-18. 468 10 + + + + + + Unfiltered, 11-7-18. 40 + + + + + + Filtered, 11-7-18. 504 20 + + + + + + Unfiltered, 13-7-18. 40 + + + + + + Filtered, 13-7-18. 421 10 + + + + + + Unfiltered, 8-10-18. 25 + + + + + + Filtered, 8-10-18. 355 10 + + + + + + Unfiltered, 10-10-18. 20 + + + + + + Filtered, 10-10-18. 385 5 + + + + + + Unfiltered, 12-10-18. 30 + + + + + + Filtered, 12-10-18. 385 10 + + + + + + Groups II & III in 10 ccs. Negative up to 50 ccs. Group III in 20 ccs. Negative up to 50 ccs. Group IV in 10 ccs. Group IV in 50 ccs. Group IV in 10 ccs. Group IV in 50 ccs. Group III in 10 ccs. Group IV in 50 ccs. Groups III & IV in 1 cc. Group III in 10 ccs. Group III in 1 cc. Group III in 50 ccs. Groups III & IV in 1 cc. Group III in 50 ccs. Group IV in 5 ccs. Group IV in 50 ccs. Group IV in 20 ccs. Group IV in 50 ccs. Group I & IV in 10 ccs. Group IV 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.