were enrolled in the service compared with nearly 82,000 pupils from 485 schools in the preceding year. The number of private practitioners participating in the scheme was 250.
DENTAL SERVICE
(Scc table 34)
60. The Dental Service provides dental care for Government Officers and dependants, limited specialized treatment for in-patients of Govern- ment Hospitals and for prisoners, and emergency treatment for members of the general public.
61. In February two dental clinics of two surgeries each were opened as parts of the Royal Hong Kong Jockey Club Health Centre at Yuen Long and the Lady Trench Polyclinic in Tsuen Wan.
62. In the field of dental health, fluoridation of the water supplies has been continued since 1961, while advantage is taken of major educational exhibitions to distribute information and advice on the maintenance of dental health.
63. Although no training in dentistry is undertaken in Hong Kong, a programme of overseas training is maintained by Government and during the year three scholarships were again awarded to students for study in the University of Otago in New Zealand. In-service training in dental technology is available for students in Government employ- ment and evening classes are held in the Hong Kong Technical College for technicians in private employment. Two dental surgery assistants were sent 10 Pegang under scholarships awarded by the World Health Organization for training in dental nursing.
BORENSIC PATHOLOGY
(See tables 35-36)
64. The Forensic Pathology Service continued to work in close co-operation with the Police Department in all branches of medico-legal work and to operate the two public mortuaries.
65. One major disaster from an air crash resulted in 58 deaths while disasters from typhoon, landslides and fire accounted for another 17.
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GOVERNMENT CHEMICAL LABORATORY
(See table 41)
66. The work of the laboratory remained at a high level in spite of the removal of the section dealing with water and waterworks chemicals to the new Public Works Department laboratory.
67. The largest number of samples were narcotics received for examination and certification under the Dangerous Drugs Ordinance. A feature of the year's work was the examination of over 5,000 lbs. of raw opium, more than four times the amount dealt with in the previous year.
68. Examination of dutiable commodities, which represent the next largest category of substances submitted, went on much as in previous years, but two new projects were the investigation of the composition of tobacco waste, which is related to the drawback of duty granted to exported cigarettes, and the investigation of yields from local distilleries.
69. Work under the Public Health and Urban Services Ordinance was concerned with the routine examination of foods to ensure that they complied with existing legislation. Concern over the possible presence of aflatoxin followed by check analyses of these products at regular intervals. A number of analyses were made of locally manufac- tured prepacked articles intended for infant feeding and which were found to have made extravagent claims for their nutritive value.
GOVERNMENT INSTITUTE OF PATHOLOGY
(Sec tables 37-40)
70. The expansion of medical services in Hong Kong and the increasing importance of laboratory investigations in both curative and preventive medicine have been reflected in the increasing number of investigations which totalled 1,128,385, an increase of about 7.5% over the pervious year. The laboratory at Queen Elizabeth Hospital is now in full operation and even without a cholera outbreak in 1965, the number of investigations showed a steady increase. With the opening of the new laboratory on 1st April, 1966 at Kowloon Hospital which will deal with public health investigations, the routine clinical pathology services for Queen Elizabeth Hospital will not be affected to an appreciable extent should an epidemic involving the services of the public health laboratory occur. Work arising from Queen Mary Hospital on pathology, clinical biochemistry and bacteriology is under-
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