M 125
F. EXAMINATION OF Water and MILK.
(1) Bacteriological analysis of water.-One thousand four hundred and eighty-four samples of water from various sources, chiefly public supplies, were examined during the year.
The results do not call for comment.
Unfiltered raw water 107 Filtered 115 Filtered and chlorinated water from service taps throughout the Colony. 1,167 Well water Water from other than public supplies... 7 Total 1,484(2) Bacteriological analysis of milk.-Forty samples of milk were bacteriologically examined; one of these was from a human source.
During the latter part of the year routine examinations were instituted of the milk of one important dairy of the Colony. It is proposed to perform these twice weekly.
G. MEDICO-LEGAL INVESTIGATIONS.
Forty-six investigations were carried out on materials furnished by the Police Department. Forty-two involved the identification of blood stains, three of semen and one of saliva. This work takes up more and more of our time and attention as time goes on. Particularly is this true of work on blood stains. The newer knowledge of the individuality of blood has opened up avenues of investigation which are of great medico-legal interest, and the police are now asking for information along these lines. This involves very onerous and painstaking work of a highly technical and difficult nature. We are glad to acknowledge the great assistance in the way of advice on technical points of procedure given us by Prof. Ride of the Department of Physiology of the University of Hong Kong. Prof. Ride's work on genetics is too well known to require any detailed mention.
H. MORBID HISTOLOGY.
Two hundred and ninety-six tissue sections were prepared and reported upon. Forty-one of these were of malignant tumours, twenty-five of benign tumours and the remainder of general pathological interest.
M 125
-
F. EXAMINATION OF Water and MILK.
(1) Bacteriological analysis of water.-One thousand four hundred and eighty-four samples of water from various sources, chiefly public supplies, were examined during the year.
The results do not call for comment.
Unfiltered raw water
Filtered
,,
107
115
Filtered and chlorinated water from
service taps throughout the Colony. 1,167
Well water
Water from other than public supplies...
7
Total
1,484
(2) Bacteriological analysis of milk.-Forty samples of milk were bacteriologically examined; one of these was from a human
source.
During the latter part of the year routine examinations were instituted of the milk of one irnportant dairy of the Colony. It is proposed to perform these twice weekly.
G. MEDICO-LEGAL INVESTIGATIONS.
Forty-six investigations were carried out on materials furnished by the Police Department. Forty-two involved the identification of blood stains, three of semen and one of saliva. This work takes up more and more of our time and attention as time goes on. Particularly is this true of work on blood stains. The newer knowledge of the individuality of blood has opened up avenues of investigation which are of great medico legal interest, and the police are now asking for information along these lines. This involves very onerous and painstaking work of a highly technical and difficult nature. We are glad to ac- knowledge the great assistance in the way of advice on technical points of procedure given us by Prof. Ride of the Department of Physiology of the University of Hong Kong. Prof. Ride's work on genetics is too well known to require any detailed
mention.
H. MORBID HISTOLOGY.
Two hundred and ninety-six tissue sections were prepared and reported upon. Forty-one of these were of malignant tumours, twenty-five of benign tumours and the remainder of general pathological interest.
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