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, W^ilson & 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 l8 13. 



Resin 3-5 5.n 



Organic Matter 1.5 2.03 



Ash 0.25 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 



