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F. EXAMINATION OF WATER AND MILK.
(1) Bacteriological analysis of water supply.-One thousand four hundred and thirty-three samples of water derived from the public water supply of the Colony were tested for bacteriological purity.
Samples were examined daily as heretofore and the results passed to the proper authorities.
The attached table gives the various sources from which the samples were obtained:
Unfiltered raw water 120 Filtered water 121 Water from service taps throughout the Colony filtered and chlorinated 1,156 Well water 36 Water from other than public supplies Total 1,433(2) Bacteriological analysis of milk.-One sample of milk was examined at the request of a private dairy.
G. MEDICO LEGAL INVESTIGATIONS.
The number of examinations carried out on behalf of the Department of Criminal Investigation continues to increase, and in the year under review is almost double that for the previous year. Fifty-five articles of various kinds were examined.
Articles examined for presence of human blood 34 Articles examined for presence of semen 18 Articles examined for presence of both blood & semen. 2 Articles examined for presence of type of hair Total 55H. MORBID HISTOLOGY.
Two hundred and sixty-four tissue sections were reported upon. One hundred and two of these were obtained at surgical operation from the hospitals or from private practitioners and the remainder forwarded by the medical officers of the Public Mortuaries of Victoria and Kowloon from post-mortem cases.
One hundred and sixty-two were examined for general pathological diagnosis and one hundred and two for type of tumours. Of the latter, sixteen were benign and eighty-six malignant.