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82. On the 11th December a visit was paid to the School. As it was ascertained that the 8 cases had been mainly diagnosed without blood examinations, arrangements were made for the instruction of a member of the Teaching staff in the taking of blood films.
83. Thick blood films were taken by the Bureau staff from 237 boys resident at the School, malaria parasites were found in 9.
84. From 19th to 31st December, 18 blood films taken by a teacher, were sent to the Bureau for examination, 8 contained parasites.
85. In the course of larval surveys done in the locality, a swamp half a mile from the School was found to harbour larvae of A. jeyporiensis in fair numbers. Several searches done on previous occasions in this swamp had yielded little or no results. Arrangements were made for ditching and oiling the swamp.
V.—SUPERVISION OF MEASURES DIRECTED AGAINST MALARIA.
Shing Mun Camp (Jubilee Dam).
86. The measures constitute a continuation of those commenced in 1933.
87. The coolies engaged on the construction of the Dam were housed in lines mostly of permanent construction, situated about 500 feet above sea level in hilly country of granite formation.
88. The average monthly labour for the year was 1620. It varied between 2064 in January and 894 in October. The majority were Cantonese, but there was a considerable number of coolies from Shanghai and a few Tamil artificers, natives of Southern India.
89. In addition there was a small police force housed in mosquito-proofed quarters at the Camp, and several European employees living in the neighbourhood in screened bungalows.
90. The nearest village is Wo Li Hop which is half a mile distant as the crow flies.
91. A Resident Chinese Medical Officer was in charge of the anti-malarial operations, under the supervision of the Malariologist. His staff for this purpose consisted of two Inspectors and ten coolies.
92. Streams and ditches were kept in order and oiled regularly. Blood films were taken, stained, examined, and reported upon by the Medical Officer and Inspectors, when time permitted larval surveys were carried out by them. Areas under permanent drainage were inspected regularly to ensure that no defects arose.