50 
the wild state the lianes may reach 4-6 inches diameter but 
under cultivation no such dimensions can he obtained, and 
even if under cultivation satisfactory growth could be ob- 
tained, I am confident that, at the present time such cul- 
tivation could not be made remunerative, and the superior 
claim of arborescent trees over climbing plants— for econo- 
mic working — will commend itself to all parties. 
Urceola dastica (getah gerip tembaga and getah gerip 
merah) is also a clffnbing plant. It does not grow m 
Borneo and is now rare in the Malay Peninsula. This was 
the first rubber plant brought to notice from any part of 
Asia bv Mr. J. Howson— a surgeon of Penang— in 1798. 
The rubber is fair grade— of the quality of Willugh- 
beiafirma. 
Leuconotis eugenuief olius (akar Getah sundi ) another 
climbing plant occurs in the Malay Peninsula, Sumatra and 
Borneo. A fair grade rubber but now rare. There are 2 
or 3 species. . . , 
M elodinus orientalis is also a Peninsula climbing plant 
of only little value. It was formerly used for adulterating 
the latices of Willuglibeia and Leuconotis . 
Par timer ia glandulifera (akar gerip puteh) and an- 
other apocynaeeous climber — Chonemo rphs macrophylla — 
have a wide Eastern distribution and some repute as rub- 
ber plants. A sample of rubber prepared from Chilocarpus 
costatus was exhibited in the Netherlands section from 
Sumatra. . ■ 
Daeva costulata (getah jelutong) is a well known tree 
in all parts of Malaya but has only received attention ior 
its commercial value during the last few years. It is a 
gigantic tree— much larger than Castilloa (the writer re- 
members a tree in Malacca nearly 200 feet high, and at a 
man’s height from the ground it requires 5 men with out- 
stretched arms to span its circumference §). Locally the 
wood— although light, is less brittle than Hevea or Cas- 
tilloa and is used for several bazaar purposes, and by 
Chinese for wooden sandals. Hitherto, native collectois 
obtained small supplies for adulterating better grade rub- 
bers and for making a local bird lime. Although the latex 
only contains a small percentage of caoutchouc (about o/o) 
a large tree is capable of yielding a considerable volume 
of such latex, reports place the weight at 2 or o pikuls t and 
as previously stated, about 1 0,000 tons of this rubber is 
♦Aetah Sundeh (trne)^rayena Leerii, a true gutta not rubber, 
§ About 30 feet circumference, 
f One pikul=133 lbs. 
