M 130
105 Larval surveys were continued in two streams A. and B. north and south of Mount Davis Road between fixed limits, and as far as possible all the larvae present were collected. In 1933 larvae had been collected from A. between Conduit and Forestry Paths about every two months. Larvae of A. maculatus were always found but in February 65 A. maculatus and 4 A. minimus were obtained.
106. In 1934 monthly collections were made; in January 35 A. maculatus, 2 A. minimus were obtained; in February 32 A. maculatus, 1 A. minimus; no more larvae of A. minimus were met with until December when 120 A. maculatus and 5 A. minimus were collected.
107. As to stream B larvae had been collected the previous year from the portion between Island and Victoria Roads about every two months. These collections were repeated at monthly intervals in 1934. In 1933 A. minimus had been found in high percentages during the cold months and the same results were obtained in 1934. Thus in January 40 A. maculatus, 25 A. minimus were collected, in February 67 A. maculatus, 10 A. minimus, no more larvae of A. minimus were met with until October when 180 A. maculatus and 3 A. minimus were obtained; in November 280 A. maculatus, 119 A. minimus, in December 128 A. maculatus, 108 A. minimus.
108. No complaints of malaria were received from the residents of the neighbourhood during the year.
(3) Pokfulam Village.
109. The villagers mostly live in huts made of bamboos and thatch. The village is situated on flat ground east of Island Road. Behind, or east of the village the ground rises sharply towards the Peak, in front or west of the village it falls abruptly to the sea. The flat portions of the streams in the neighbourhood of the village are trained. In 1931, 50 children were examined, 2 or 4% had enlarged spleens.
110. Mosquito catching was done one morning each month until June, after that two visits were made monthly. The most likely huts for A. minimus were always searched, namely, those nearest the untrained hill streams. In 19 mornings only two A. minimus and one A. maculatus were obtained. C. fatigans was well represented in the catches.
111. Three streams run into the valley in which the village is situated, one is an overflow from Pokfulam Reservoir which finds its way into a concrete channel. Above the Reservoir the main stream which commences below the Peak Hotel, was searched in July and only larvae of A. maculatus were found. In November 36% of the collection of 385 larvae was A. minimus the majority of which were obtained near the Reservoir.