M 82
BACTERIOLOGICAL EXAMINATION OF WATER SUPPLIES.
The number of samples of water examined during the year was 1,742, a decrease of 49 on last year's figures; this is accounted for by the absence of the public tanks used during the drought.
The following Table gives the sources from which the samples were obtained:-
Unfiltered raw water from filter beds 123 samples. 131 Water after filtration from filter beds Tap water samples in Victoria & Kowloon 1267 Well waters 39 Water from other than public supplies 182 11 Total 1742 1The private water supplies of the Dairy Farm were examined regularly as in former years, the results being forwarded to the Honourable Director of Medical and Sanitary Services.
The public water supplies of Victoria and Kowloon continued to maintain a high standard of purity.
Domestic filter candles were examined and sterilized regularly for various Government and other institutions, the total number dealt with being 378, an increase of 26 over last year.
BACTERIOLOGICAL ANALYSIS OF MILK.
Samples of both fresh and Pasteurized milk were examined regularly during the year for the information of the Public Health Authority.
The number of samples examined being 207, an increase of 17 over last year.
The specimens were from public supplies and from the Tung Wah Hospital.
EXAMINATION OF DISINFECTANTS.
Two samples of disinfectants were examined by the Rideal Walker test, at the request of the Medical Officer of Health.
MEDICO-LEGAL WORK.
Thirty-three articles were examined for Medico-legal purposes during the year at the request of the Criminal Investigation Department.