4 
AUDY & HARRISON 
by bombs in 1945) has been shared by the American team and ourselves, by the courtesy of the 
Director of Museums, to whom we are very grateful. Mr. Ensoll was lent to this Unit in 
January, 1948, and officially seconded from the Museum in 1950. 
The main sources have been : Kuala Lumpur town, an Oil Palm Estate (part of which was 
the site of the classic outbreak in 1924-1930), various tracts of wasteland, and four forest reserves. 
These are shown on the maps. Figs. 1 and 2 and in the accompanying photograph. Three 
areas in Johore, one in Negri Sembilan, several islands in the Straits of Malacca, and one of the 
Nicobar Islands have been investigated briefly. The findings are noted below. 
In more detail, the collecting areas are as follows ( see the map, Figure 2) : 
A. forest : 
1. Bukit Lagong Forest Reserve , by a party of Aborigines living there. Referred to in 
notes as “Kepong”. (Bukit = hill). 
2. Bukit Lanjan ( Sungei Buloh Forest Reserve ), by a party of Aborigines living there. A 
very small reserve much surrounded by young and old secondary growth in which 
much of the trapping takes place (Fig. 3). (Sungei= stream). 
3. Ulu Gombak Forest Reserve: “Pahang Road’’, by a group of Aborigines who lived 
there wandering over an area traversed by some 20 miles of road. Collecting 
area mostly Selangor, partly Pahang : occasional collecting from surrounding 
mountains. Owing to bandit interference this party of Aborigines moved away 
in November, 1949, to Ulu Langat, and the collecting area was then abandoned. 
(Ulu= upper reaches of a river; upcountry). 
4. Ulu Langat Forest Reserve , in the next major valley south of Gombak but not so easy 
to reach from Kuala Lumpur; also by a group of Aborigines. This is the most 
remote and undisturbed of the forest collecting areas. 
B. kuala lumpur town i by town rat-catchers. 
C. oil palm estate (Elmina) near Sungei Buloh, by estate labour. This was the site of 
the outbreak described by Fletcher and Field (1927). The formerly infected area, 
now known as Field 3, is covered in fully grown palms and appears to be no longer 
dangerous. Fletcher et al. (1929) record some mites collected from this field. 
Records by Gater (1932) of Sungei Buloh as a type locality refer to this estate and the 
forest immediately adjoining it. It would however be justifiable to accept material 
collected from what we call the Bukit Lanjan F.R. and the Sungei Buloh Settlement as 
topotypic with Gater’s species. 
D. WASTELAND AROUND KUALA LUMPUR : 
1. Subang 
2. Seaport Estate at Sungei Way — site of exposure of volunteers in the field trails of 
Chloromycetin in 1948, described by Philip et al. (1949). 
3. “West Folly ”, an area of scrub bordering on the Lake Gardens. 
4. Casual areas — Jinjang Estate, Wardieburn Estate, Taynton Estate, Cheras Estate, etc. 
E. villages around kuala lumpur : Sungei Buloh , village and leper settlement; 
Kepong village. 
F. mark-release schemes (see below) at Sungei Buloh and in Kuala Lumpur. 
G. ears (with mites attached), sent by post : 
1. Singapore by Dr. S. Y. Ng, Municipal Laboratory (1312 pairs regularly from May, 
1948 to August, 1951). 
STUD. INST. MED. RES. 
