T2 7 



A second and larger sample of Getali 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 wa£ therefore of better quality than the first 

 specimen. 



Specimen of Gutta Percha obtained by Dr. OBACH from Mr. 

 H. N. Ridley in 1892. 



Variety. 

 Getah Tahan Merah. 



Botanical Source. 

 Dichopsis Gutta (Benth.) 



Appear<nne. 

 Light Pinkish-brown, 

 dean, dense. 



Water. 



Gutta. 



Resin. 



Dirt. 



Character of 

 gutta. 



Character of resin. 



.3.. 



66.7 







14.0 



6.2 



Light, Pinkish, 

 very strong. 



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. OBACII 

 was of rather better quality than that now under notice, whereas 

 the present samples of Gutta Simpor and Gutta Taban Chain 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 as the result of their examination, they valued the specimens 

 as follows : — 



Xo. 1 Gutta Taban Putih ... 2s. per lb. 



No. 2 Gutta Simpor ... ... is. (vt. per lb. 



Xo. 3 Gutta Taban Chaia ... 2s. 4a'. per lb. 



Xo. 4 Gutta Minjato Xo use for insulating purposes. 

 Xo. 5 Gutta Susu do. do. do. 



Xo. 6 Gutta Taban Merah ... 6s. 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, and it 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 noticed 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 Pontianac. 



Conclusions 



This enquiry has therefore shown that the Gutta Taban Putih is 

 wry inferior in quality to the Gutta Taban Merah, and that it is 

 onlv worth about one-third the price of the latter. Xo information 

 ^as hern furnished regarding the relative vields of gutta pereha 



