Бї 
238. 
Our examination has been principally directed to the following 
points, viz., whether the extraction of Gutta Percha from the same 
could be made remunerative as a commercial li and whether — 
is dui probability of its meeting with a specific application which m 
give it a commercial status. 
source of Gutta Percha many points have to be considered, 
apart from the quality of the Gutta Percha which may be obtai ned 
from it. 
The most кии method for voa the Gutta Percha from 
it, is in treating the crushed bark with a uitable solvent of a volatile 
nature, so that the diris of the soluble туша may be attended with 
little chance of alteration in his physical properties 
The crushed bark thus treated Meier 13*6 per cent. to bieulphide of 
ибо rating the b i 
n 
hardens on cooling, and stems 1 in warm water; in fact, in these 
respects it strongly comports itself to Gutta Percha; in colour and 
tenacity it is unlike any description of ordinary good Gutta Percha. 
It is very improbable whether its recovery by means of solvents 
would be remunerative, as the necessary loss in treating ah large 
quantities of accompanyirg useless matter would be very grea 
The want of tenacity in the product obtained is due to the presence 
of a britile resin, which also contributes to the facility of softenin 
low tempera acon The difficulty of manipulating the same by any 
ordinary appliance used in treating Gutta Percha or India Rubber, 
adds to the difficulty ч suggesting a probable field in which its pro- 
perties would be apprec 
I am, &c. 
Biete Тноз. T. P. Bruce WARREN. 
. Robert Kaye @ 
106, Cito rs E.C. 
ROYAL GARDENS, Kew, to COLONIAL OFFICE. 
Sin, Royal Gardens, Kew, August 6, MS. 
I HAVE the honour to inform you that Mr. Leonar ys 
junior, Curator of the Perak Museum, addressed Vy icon oe 1883, a 
very valuable report to Sir Hugh Low, K.C.M ‚ Resident in that 
State, upon the Gutta Percha yielding trees indigena 
In this report he set out grounds м believing a no ый Шап 30 
times the amount of Gutta Percha actually extracted by the process of 
felling remained in the tree and was sche wa 
Struck with this fact he was anxious to dba yaa if any part of this 
enormous residue could be extracted from the dried bark after removal 
from the tree. 
As will be seen from the aecompanying correspondence four barrels 
of bark of one of the species were 5 ODDO to Kew for the purpose of 
mited, 
ment in the matter. 
regret to say that after a very careful PT of the question they 
find that though a large proportion of the Gutta Percha is undo ubtedly 
ls er it is so — m with a bilis: resin that the resulting 
is commercially. 
nate as is this onli it by no means diminishes the credit 
T to Mr. Wray for his thoughtful s i 
