264 
Kind. Variety. 
Per cent. Gutta P Price 
per picul. 
u Reds ” Pahang- 
- 
78 
■ 
$260 
Sundek Bulongan 
- 
69 
- 
225 
Sundek Bagati 
- 
57 
- 
2 10 
Serapong 
- 
56 
_ 
r8o 
Sarawak 
- 
- 
_ 
85 
White Treganor 
- 
5 2 
_ 
85 
Pahang 
- 
- ■ 
90 
Jambui 
- 
49 
- 
. . . 
Mixed reds Sarawak 
1 
61 
_ - 
: 10 
Sarawak 
2 
56 
_ 
9 ° 
Sarawak 
3 
5 2 
- 
70 
Sarawak 
4 
40 
Reboiled Padang 
5 ° 
- 
90 
Penang 
- 
- 
90 
Siak - 
- 
- 
- 
1 1 
* These percentages 
are stated by 
Dr. Obacb. Dr. 
Sherman 
writes : “As the percentage of Gutta in a sample of pure Gutta- 
percha from the species Dichopsis gutta is generally 85 to 90, it is 
certain that the best commercial variety is far from being pure. 5 ’ 
The grading as here given has been changed from year to year, 
the names simply signifying some peculiarity of the Gutta-percha 
and the places from whence the different varieties are supposed to 
come. There is no connection whatever between the different 
kinds (as described commercially) and the species of the trees. 
This lack of connection has greatly retarded the scientific study of 
Gutta-percha for, when the products of two different kinds of trees 
are mixed, there is no known way of separating or identifying 
them. 
A table is given of imports of Gutta-percha into Singapore for 
1900, and also of the exports. Two grades are given correspond- 
ing evidently, to Gutta-percha and Gutta-jelutong (Pontianak) the 
totals being as follows, in pounds : 
Imports. Exports. 
Gutta-percha - - - 9,875,533^ - 12,986,600 
Inferior Gutta - 15,683,866! - 12,790,000 
Total ... 25,559,400 25,776,600 
These figures compare very closely with returns printed already 
in The India Rubber World, which has stated the export of true 
Gutta-percha from Singapore in 1900 at 13,684, 133^ pounds,- as 
against 12,986,600 pounds above. 
From the tables it is seen that Gutta-percha is divided by the 
statisticians into Gutta-percha proper and inferior Gutta, anything 
under an import price of $'15 (Mexican per picul of 133^ pounds) 
coming under the latter head. This new method of dividing the 
Gutta-percha into a high and low grade was devised in order to 
avoid the misleading figures of the Gutta-percha trade, which re- 
sulted formerly when the great quantity of inferior Gutta, which is 
in truth no Gutta at all, was considered a real Gutta-percha. 
