1 2 7 
A second and larger sample of Getah Taban Simpor from Di- 
chopsis Maingayi was sent to Kew by Mr. WRAY in 1886. On 
analysis this was found to contain 31.2 per cent of gutta and 62.3 
per cent of resin, and was therefore of better quality than the first 
specimen. 
Specimen of Gutta Percha obtained bv Dr. ORACH from Mr. 
H. N. Ridley in 1892. 
* Variety. 
Gdah Taban Merah. 
Botanical Source. 
Diekopfis Gutta (Benth.) 
Appearance. 
I.io-ht Pinkish-brown, 
clean, dense. 
1 Water. , 
L _J 
| Gutta. 
Resin. Dirt. 
1 
Character of 
gutta. 
' Character of resin. 

ij-i 1 
j 66.7 
14.0 6.2 
Light, Pinkish, 
very strong. 
1 Hard, reddish-brown, 
translucent. 
The results of the chemical examination of the present series of 
samples are in general agreement with the previous analyses just 
given. The sample of Gutta Taban Putih analysed by Dr. ORACH 
was of rather better quality than that now under notice, whereas 
the present samples of Gutta* Simpor and Gutta Taban Chaia are 
distinctly- better than the earlier specimens. It will be noticed that 
the botanical sources of Gutta Taban Putih and Gutta Taban Chaia 
are transposed in the two series. 
Commercial I 'al nation. 
The samples were submitted for valuation and technical trial to 
manufacturers using large quantities of gutta percha, who reported 
that ns the result of their examination, they valued the specimens 
as follows : — 
No. 1 Gutta Taban Putih ... 2 s. per lb. 
No. 2 Gutta Simpor ... i.r. CW. per !b. 
No. 3 Gutta Taban Chaia ... 2 s. 4 d. per lb. 
No. 4 Gutta Minjato No use for insulating purposes. 
No. 5 Gutta Susu do. do. do. 
No. 6 Gutta Taban Merab ... 62'. per lb. 
The price of the last sample may be taken to represent the mar- 
ket value of the highest grade of gutta percha, subject to fluctu- 
ations, audit is therefore evident that Gutta Taban Putih of similar 
quality to the present specimen will only command one-third the 
price of this. It will be Tioticed too that a higher value is assigned 
to the Gutta Taban Chaia than to the Gutta Taban Putih. The 
Gutta Susu would fetch the market price of Pontianae. 
Conclusions 
This enquiry has therefore shown that the Gutta Taban Putih is 
very inferior in quality to the Gutta Taban Merah, and that it is 
only worth about one-third the price of the latter. No information 
has been furnished regarding the relative vields of gutta percha 
