12 
67. Two visiting research workers were at different times given facilities 
for taxonomic and field study of the order Rutaceae of which Citrus is the 
most important family. These workers were Mr. M. B. Spurling of the Depart- 
ment of Agriculture, Adelaide, South Australia and Mr. A. Santiago of the 
Department of Agriculture, Federation of Malaya. 
68. Collaboration such as the above is always welcome. The field for 
research is immense and the facilities of the Department will always be fully at 
the service of research workers, especially trained botanists from the main 
herbaria and Universities of Europe and America. It is on such institutions 
where classical collections and type specimens are stored that a knowledge of 
tropical botany is to a large extent dependent. 
69. Much material was received from other institutions for naming, in 
particular from the Department of Chemistry, Kuala Lumpur, in connexion 
with the phytochemical survey of the Malayan flora, and from the Forestry 
Departments of the Federation of Malaya and the Borneo territories. 
70. Routine mounting, repairing of damaged sheets and poisoning pro- 
ceeded normally. 
71. The herbarium has now reached saturation. With cracking of the 
walls, recorded above, additional weight cannot now be added to the upper 
floor and the space available there for more cabinets is thus not usable. Consi- 
deration must therefore now be given to further building. 
XVIII. LOANS OF HERBARIUM MATERIAL 
72. Specimens sent on loan totalled 2,517 sheets. The majority went to 
Leiden for Flora Malesiana workers. The principal families were Bombaci- 
neae, Celastraceae, Euphorbiaceae (T rigostemon) , Menispermaceae, Staphy- 
leaceae and certain genera of Roseaceae, Lauraceae, Sterculiaceae, Legumi- 
noseae, Guttiferae and Tiliaceae for Dr. Kostermans at Bogor. Distribution is 
given in Appendix IV. 
73. Specimens received on loan for study at Singapore totalled 2,651 
sheets which were 2,606 sheets of Myristicaceae for Mr. Sinclair from Bogor 
and Kepong and 43 sheets of Myrsinaceae for Dr. Furtado from Kuching. 
XIX. PLANT UTILISATION 
74. The Director in the course of his work on marine algae collected 
samples in bulk of certain common species and sent them to the Tropical 
Products Research Institute in London for chemical analysis. Two species 
submitted warranted further consideration. 
HORTICULTURE 
XX. GARDENS MAINTENANCE 
75. The Gardens were well maintained. Lawns were kept mown and 
tidy. A large number of beds was prepared and twenty-two existing beds were 
reconditioned and manured. Seventy-six shrubs and trees were planted. Eight 
hundred and forty-one plant labels were made or renewed. 
76. The water in the Lake was drained to permit clearing out of debris. 
At the same time the pandans on the island there were cut back. Attempts to 
re-establish the water lilies have not been successful. These plants succumbed 
when the lake was drained and remained empty for some weeks in 1956 to 
