438 
We think you will agree that this is in most respects extremely 
satisfactory, far more so in fact than the physical properties of the 
samples before manufacture appeared to warrant. 
It is of course more and more clear that the important matter in 
handling plantation rubber is the vulcanising, and we trust that the 
opinions our friends have formed after these experiments will be con- 
firmed after more prolonged tests. 
We are, Dear Sir, 
Yours faithfully, 
for Gow, Wilson & Stanton Ltd., 
Spencer Brett, 
Managing Director. 
EXTRACT. 
Para Rubber from Singapore Botanical Gardens. — With reference 
to your letter of October 20th sending a small sample of Smoke Cured 
Para Rubber from the Singapore Botanical Gardens prepared exactly 
on the same lines as Hard Fine Para, we have tested this rubber and 
compared it with Hard Fine with the following results : — 
Hard Fine Para Singapore Botanical Gardens 
Smoke Cured Para. 
% % 
Loss in washing 
18 
IT 
Resin 
3-5 
5 -n 
Organic Matter 
1-5 
2.03 
Ash 
O.25 
0.38 
In quality and general behaviour, this rubber is extremely like 
Hard Fine Para in tensile strength and in power of recovery, but is 
slightly softer and requires a different vulcanising heat. 
The elasticity and tensile strength for the period covered by the 
experiments Ishow that at the proper vulcanising heat, it is as durable 
as Para. We will, however, make periodical tests in order to con- 
firm this fact over a longer period 
PEAT SOILS. 
Mr. Schirmer sends some correspondence and analysis of soils in 
Johore which may interest some. It is on the peat soil especially that 
his Sisal hemp and other fibres have grown in so striking a manner. 
The interesting point of the analysis of the peat soil lies in its 
close resemblance in chemical constituents to that of an analysis 
from another source given previously in the Bulletin. 
One could hardly agree however with Mr. Baur as to the peat 
soil being well suited for rubber from a chemical standpoint, and 
it is still less so from a physiological standpoint as pointed out in 
