set up during the course of the expedition; on the Bembangan river, about 
two hours march east of base at the same altitude ; on the East Mesilau river 
at about 6,000 ft., and at the headwaters of the Mentaki river at about 9,000 
ft. More than 3,000 numbers of botanical specimens were collected; numerous 
soil pits were dug and sampled; many bird and small mammal skins were 
collected and a large number of birds ringed; twenty ecological plots were 
sampled, and insects, especially the family Simuliideae were collected. 
39. An important collecting expedition was made in August by Mr. 
Hardial Singh, Botanist, in the Sungei Yu and Sungei Jeleteh area of Pahang 
while attached to a Malayan Geological Survey party. The assistance of the 
Director of the Malayan Geological Survey and of the State Surveyor are 
gratefully acknowledged. 
40. Mr. Hardial Singh and Mr. Munir abid Chaudhury made two 
collecting trips, one to Ulu Kerling in Selangor and to Sg. Patani, Kedah, and 
the other to Sungei Lembing and Lepar Forest Reserve, Pahang, and to the 
Bukit Bauk Forest Reserve, Trengganu. These expeditions were primarily to 
look for Verbenaceae being studied by Mr. Munir, and to collect Araceae. 
41. The Director made two collecting trips to Pulau Tinggi off the 
east coast of Johore to extend his marine algal collections, and another to 
Pulau Undan olf Malacca. The Southern Islands off the south side of Singa- 
pore Island and particularly Raffles Light which have previously been the 
main collecting points for this algal field work have become inaccessible owing 
to Indonesian confrontation’, and were not visited during the year. While on 
casual leave he collected on Gunong Jerai, Kedah and at Penang and Port 
Dickson. 
42. It is convenient to record here the collecting expeditions of Mr 
Alphonso, Curator, for living plants, chiefly orchids, for cultivation Two 
major trips were made into Thailand : one to Chiengmai in the north and to 
Nakorn Nayok, northeast of Bangkok, and the other to the Western side of 
peninsular Thailand south of the Isthmus of Kra. Two other trips were made 
to Pahang. All four were extremely successful, yielding in all 1,266 plants 
in 237 numbers. These trips are summarised in Appendix VI, as well as other 
collecting expenditions for herbarium material. 
XX. EXCHANGE AND ACQUISITION 
43. Because of the necessity of all the herbarium material going into 
storage during the reconstruction of the herbarium, and because three 
members of the botanical staff were away on the Royal Society Expedition 
tor nve months [a fourth member was away the whole year on national 
defence duties], distribution of duplicate material virtually ceased though 
material has continued to come in. The relatively little material that was sent 
out was entirely of marine algae which, for the Director’s convenience of 
working, had been kept to hand out of the general storage. Though the 
reconstructed building was ready for use at the beginning of July normal 
working was not resumed till after the end of the year.The move back into 
the reconstructed building was slowed down by the necessity of passing every 
specimen through the fumigation chamber and of cleaning and thoroughly 
disinfecting every cupboard and item of furniture going back into the new 
8 
