264 



Kind. 



Variety. 





Per cent. Gutta* 



Price per pic it I 



" Reds" 



Pah an g- 

 Bulongan 



- 



78 



§260 



bundek 





69 



225 



Sundek 



Bagan 





57 



210 





Serapong 







I 50 





Sarawak 







_ 



8 5 



White 



Treganor 



Pahang 



Jambui 



_ 



5 2 

 49 



^5 



90 



Mixed reds Sarawak 



1 



61 



: 10 





Sarawak 



2 



56 - , * 







Sarawak 



<a 



5^ 



70 





Sarawak 



4 





40 



Reboiled 



•Padang 

 Penang 

 Siak - 





5° 



90 

 90 

 1 1 



* These percentages are stated by Dr. Obach. 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." 



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 (Pontunak) 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 abovei 



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 1334- 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*. 



