M 140
99. The average monthly population for the year was 1620. The malaria case rate per 1,000 of the population was 314.
100. During the present year there was no extension of the area under anti-malarial treatment, oiling and upkeep of the streams and ditches dealt with in previous years were continued.
101. As in former years, routine surveys were done in the swampy area at the head of A2. Anopheline larvae were met with in small numbers only. Surveys were also repeated in the tributaries of the Shing Mun beyond Pineapple Pass and in the ditches of the drained fallow fields; larvae of A. maculatus were collected, but not in great numbers.
102. About the middle of the year, rice planting took place in some of the fields north of the Access Road between A5 and the head of B. These fields had formerly been allowed to go out of cultivation and had been drained.
103. Owing to the waters of the Shing Mun being impounded at Jubilee and Pineapple Pass Dam, low-lying areas formerly drained were covered with water, and frequent use was made of the boat purchased by the Malaria Bureau in 1935.
104. The results of 352 morning catches in the coolie lines are indicated in Table IX; the results of the dissections in Table X. The numbers of A. minimus and A. jeyporiensis taken were less than those of former years, but the numbers of A. maculatus and A. hyrcanus much larger. The majority of the A. minimus, A. jeyporiensis, A. hyrcanus were caught in the last quarter of the year.
The infection rates of A. maculatus and A. hyrcanus were, as usual, low in comparison with those of A. minimus and A. jeyporiensis.
105. Morning catches were also done in goat pens, the goats being the property of the Indian police. 258 Anophelines were captured: 104 were A. maculatus, 108 A. hyrcanus, 41 A. jeyporiensis, 2 A. minimus, 3 A. fluviatilis. No infections were found in 227 dissected. Precipitin tests were done on a few; the results are given in Table V.
106. Table XI gives the estimated population of the Labour Force month by month, its distribution according to race, the number of cases treated due to malaria and to all causes, also the results of examination of blood films for malaria. The figures have been supplied by the Resident Medical Officer. The malaria case rate was low in March and April, high in October and November—when the A. minimus and A. jeyporiensis catches were high.
107. Table XII gives the monthly malaria case rates for the years 1933, 1934, 1935, 1936, also the annual malaria case rates. In 1933, the malaria at Shing Mun was epidemic; in the following years...
M 140
99. The average monthly population for the year was 1620. The malaria case rate per 1,000 of the population was 314.
100. During the present year there was no extension of the area under anti malarial treatment, oiling and, upkeep of the streams and ditches dealt with in previous years were continued.
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101. As in former years routine surveys were done in the swampy area at the head of A2, Anopheline larvae were met with in small numbers only. Surveys were also repeated in the tributaries, of the Shing Mun beyond Pineapple Pass and in the ditches of the drained fallow fields, larvae of A. maculatus were collected, but not in great numbers.
102. About the middle of the year rice planting took place in some of the fields north of the Access Road between A5 and the head of B.. These fields had formerly been allowed to go out of cultivation and had been drained.
103. Owing to the waters of the Shing Mun being im- pounded at Jubilee and Pineapple Pass Danis, low lying areas formerly drained were covered with water, and frequent use was made of the boat purchased by the Malaria Bureau in 1935.
104. The results of 352 morning catches in the coolie lines are indicated in Table IX, the results of the dissections in Table X. The numbers of A. minimus and A. jeporiensis taken were less than those of former years, but the numbers of A maculatus and A. hyrcanus much larger. The majority of the A. minimus, A. jeyporiensis, A. hyrcanus were caught in the last quarter of the year.
The infection rates of A. maculatus and A. hyrcanus were as usual low in comparison with those of A. minimus and A. jeyporiensis.
105. Morning catches were also done in goat pens, the goats being the property of the Indian police. 258 Anophelines were captured, 104 were A. maculatus, 108 A. hyrcanus, 41 A. jeyporiensis, 2 A. minimus, 3 A. fluviatilis. No infections were found in 227 dissected. Precipitin tests were done on a few, the results are given in Table V.
106. Table XI gives the estimated population of the Labour Force month by month, its distribution according to race the number of cases treated due to malaria and to all causes, also the results of examination of blood films for malaria. The figures have been supplied by the Resident Medical Officer. The malaria case rate was low in March and April, high in October and November-when the A. minimus and A. jeyporiensis catches were high.
107. Table XII gives the monthly malaria case rates for the years 1933, 1934, 1935, 1936, also the annual malaria case rates. In 1933 the malaria at Shing Mun was epidemic, in the following
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