of the Malay Peninsula and islands. These climbers produce 
considerable quantities of the rubber of commerce, but are not 
at all satisfactory to cultivate. They grow, it is true, easily 
enough from seed or cuttings, but produce under cultivation 
thin, slender stems not at all easy to get the rubber out of, and 
/en if they did attain the thickness of stem that they do in the 
jungle, which is about as thick as the leg, they would be difficult 
to work economically. 
For cultivation purposes, it is, therefore, necessary to turn the 
attention to the trees, and of these the following are the kinds 
which have attracted most notice : — 
India rubber, 
Lagos rubber, 
'Jelutong, 
Pu lei, 
Ceara scrap rubber, 
Para rubber, 
Central America, 
Vlangabeira, 
Ficus elastica , 
Ficus Vogelii, 
Kickxia africana, 
Dyera costulata, 
A Istpnia scholaris. 
Manihot Glaziovii, 
Hevea braziliensis 
Castilloa elastica, 
Hancornia speciosa, 
Assam to Perak. 
West Africa. 
99 
Malay Peninsula. 
Brazil. 
9 9 
Pernambuco. 
Ficus elastica supplies a very fair rubber, but the tree seems 
o be of slow growth, and rather expensive to cultivate even in 
tssam . It does not grow at all well in Singapore, though it per- 
laps might do better in the hills of Perak and Selangor, but I 
■hould very much doubt its being at all suitable for cultivation 
>y planters. 
Ficus Vogelii and Kickxia africana are but little known as yet 
n cultivation. Seeds of the latter were i ecc.Veu’ lecently at the 
hardens, but only a few germ ironed, and all soon perished. 
Dyera costulata is a large cree common in our jungles. The 
■ubber is abundant, but usually contains much water. It is 
considered of a low quality and seems chiefly to he ue 'd for ad lib- 
erating uther kinds, 1 here is, however, a fairly large trade in 
t in Singapore. 
Alstonia scholaris is also u. common large tree, but the rubber 
s thought but little of and is seldom collected even in the Malay 
Peninsula. 
Central American rubber, Castilloa elastica , the biggest of all 
he rubber trees, is a native of Panama, where it grows in damp 
vooded ravines, along the edges of streams. It grows very feebly 
iere, and never looks healthy. It seems to thrive better in 
southern India, but there is as much difficulty m extracting the 
ubber as there is in Ceara scrap. 
Mangabeira, Hancornia speciosa , is a small birch-like tree, 
diich grows on the dry sandy heaths in Pernambuco, where I 
lave seen it. It is a poor class rubber, and is, I think, not worth 
'ultivation. here at least. I doubt if it has ever been introduced 
nto this country. 
Para rubber, Hevea braziliensis, on the other hand, has the 
dvantages of being exceedingly easily grown, and a very suitable 
