mg Rambong is to allow it to coagulate on the tree and then 
pulled off in strings which are wound into balls. In Mr. Derry’s 
Report for 1900, he mentions that he sent home 5! lbs. of Ram- 
bong Rubber prepared in this way which was quoted at 3/6 but 
which actually sold for 3/ro per lb. and was stated lo be of good 
Java character. A small sample from Bukit Lintang which was sub- 
mitted to a local expert was quoted as follows. “ The sample of 
“ susu ” duly reached me I “estimate it commercially as a good 
“ but not quite the best quality of ordinary iC Borneo Rubber” 
“ clean and well prepared value $ 145. to §160. per picul the pre- 
“sent value of No. 1 Borneo Rubber wet and dirty being 
$ I2 5~$ r 29, and Gutta Grip Merah known commercially as Penang 
“Rubber” No. I, about Si 70. 
This of course compares very unfavourably with the price ob- 
tained for Rambong as quoted by Mr. Derry, and it will be inter- 
esting to find out whether the difference in price is caused by the 
different method of preparation or that the quality of the rubber 
yielded by the 19 year old trees tapped by Mr. Derry, is so much 
better. In a future number of the Bulletin the home Report will 
be given on the samples sent and we shall then be in a better 
position to judge the cause of the wide discrepancy in price. 
GUTTA JELUTONG. 
Gutta Jelutong is obtained from a large tree (Dyera costulata) 
the wood of which is used for clogs, planks, and other purposes. 
Jt is fairly common in many parts of the Malayan region. Some 
few weeks ago a sample of this Gutta was received from the Senior 
District Officer, Province Wellesley, and sent to the Director Royal 
Gardens Kew w^ho submitted it to the w^ell known London Brokers 
Messrs. Hecht Luis & Khan, who reported on it as follows. 
“ Gutta Jelutong is know n on the market here as Pontianak and is 
worth to-day about £19. per ton. It generally arrives here in 
large brick-shaped lumps and we have never seen it in the form 
of your sample which also has not the peculiar smell that Ponff- 
anak has. We should estimate the value at about ^19-^20. per 
ton.” As will be seen from this, Jelutong is a low grade article of 
no great value, but as the trees are often cut for conversion into 
planks &c the gutta as a secondary source of profit is at least 
worth attention. The w'ood is white, soft, and extremely light, 
specially adapted for drawing boards and postal boxes. It is 
doubtful whether Gutta Pontianak is the product of Dyera costu- 
lata only, it is more probably an admixture, as is the case with the 
majority of the Guttas and rubbers of commerce. 
