108 
There has been a large demand for seeds, and about 35,000 have 
been supplied. How far this industry is deserving attention may 
be inferred from the following moderate estimate :— 
(Planted 14 feet x 14 feet = 225 trees to the acre.) 
: i i.e., | Gross value estimated 
Age. Yield per tree. pa treo x 223. ju "at 2s. per lb. 
Years. Ounces, Pounds. A 2:4. $ 
6 10 1401 14 10 0 
7 18 250 35-0 0 
8 26 365 86. 15. 0 
9 34 478 47 13 0 
10 42 5903 i9 
The importance of close planting is not generally D 
Planted at 14 feet x 14 feet, against 25 feet x 25 feet, would 
. possibly result i x a difference of one year in six in feo ‘of close 
planting. I am of opinion that, planted 14 feet x 14 feet, trees 
could be inset i in the fifth year, if not cst ng rubber isa 
remarkably adaptable tree, growing in swamp , high 
ith 
and, or dry 
ground without, so far as I have tested, any 57 unde in nis yield 
rubber. 
The following extracts are taken frem Notes on Rubber Growing 
in Perak by Mr. L. Wray, Curator and State Geologist, Perak, 
dated 4th December, 1897 :— 
In 1887 some seed was obtained from the Kuala Kangsar trees 
and planted in the Museum grounds, Taiping. The soil is very 
grown well and have ares in the ten Jee which have elapsed 
The tree has also ks planted at Rae DE where it grows 
well. It is in the garden of the District Magistrate, and close to 
the river. The land is occasionally flooded ed by the river, and in 
the ordinary way at high tide the river is only a foot or two 
below the level of the surface of the ground. The river is quite 
salt enough for the Nipa palm to grow well on its banks. 
t has been planted at Sitiawan, also on low land near the sea: ; 
at Tapah, Batu Gajah in Kinta, and other places in the State, and 
in all it has grown w ell. 
It may sede be stated that it will thrive in any locality, 
om the bakaw swamps to the foot-hills, and on any soil, from 
rich alluvial to Aeg mine-heaps. 
So far I have not noticed that it has any enemies which n ii 
serious injury. When large areas come to be planted up t 
may arise trouble with some pest, but at Aan there does ook 
appear to be any indication of such a contingen 
Hitherto the trees have been planted o and, as une be 
