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sample has been perhaps slightly overheated in the process of 
smoking. 
The unapproachable light colour, which is so much valued by 
many manufacturers, and which differs from all other sorts would be 
affected by the process of smoking. 
We beg to remark that we will refer again to the tests for break- 
ing strain, stretch, and viscosity, as we will repeat these tests after 
the materials made have been kept for some time. 
Should you desire to have further tests made for an exact com- 
parison, please send us further samples, say about 10 lbs. each, 
gathered from trees the same age and under the same conditions, 
smoked, and unsmoked, and we shall be very pleased to make the 
tests and give you a report on same. 
We are, 
Yours truly, 
Vereinigte Gummiwaaren-Fabriken Harburg-Wien 
Vormals Menier-J. N. Reithotter. 
LE NOZ. 
W. KULLUNAY. 
Continental Scientific Laboratory. 
(Translation.) 
Dear Sir,— The sample of smoke cured Rubber of Mr. Ridley, 
the receipt of which I acknowledged already has been tested here and 
you will find the results under. I beg to state that the examination 
has been made by Dr. Weill of the “Continentals” scientific labora- 
tory. The Rubber looked quite the same as Brazilian Rubber, even 
the smell was alike. The colour was almost black externally, like the 
Brazilian, the cut was white. 
On cutting the sample quite a quantity of water ran out and it 
appeared that the different films of the Caoutchouc were much thicker 
than is the case with the Brazilian Rubber. Further several spots 
showed considerable quantities of a somewhat spongy, yellow-white 
matter, which is also found in the Brazilian “ Extrafine.” This is the 
consequence of insufficient careful smoking. With a longer experience 
this can be easily avoided. I am inclined to believe that too much 
latex has been put on at a time. 
The quality of the Rubber is an excellent one, the loss in washing 
and drying was 1 8, 9 %, the dry rubber contained 5 % of resin. As to 
the percentage of J 8, 9 % water, fresh imports of SOFT FINE PARA 
show the same loss, whereas HARD FINE, from the upper Amazon- 
as, should not have more than 17 % on account of the longer transport. 
However, it is sometimes more than 17 %. 
