338 
No. 6. Two pieces of thin sheet rubber, dark brown in colour 
and rather moist. The rubber resembled No. 4 in physical proper- 
ties. 
The results of the analysis were as follows : 
Moisture 
Caoutchouc 
Resin 
Saccharoid substance 
Proteids 
Ash 
* Including 1.6 per cent, “insoluble caoutchouc.” 
It will be seen from these analysis that the percentage of resin 
in the three samples, when corrected by the determination of the 
amount of the saccharoid substance which was previously included 
as “resin,” are practically identical, viz., 2.6, 2.7 and 2.8 per cent, and 
within the usual limits for Para rubber. The amount of moisture 
present is rather variable, 3-5, 0-9 and 5-6 per cent, and also the per- 
centages of “insoluble caoutchouc” 4 5-7 and 1.6 per cent. 
In the absence of full information respecting the origin and pre- 
paration of these samples it is not possible to discuss the results 
fully. I shall be glad to know whether Mr. Ridley has furnished you 
with such information. 
I am, 
Yours faithfully, 
(Signed) WYNDHAM R. DUNSTAN. 
Per cent 
5.6 
88.0* 
2.8 
1.0 
2.3 
0.3 
BROWN'S SPECIFIC 
FOR 
AND 
DIARRHOEA. 
To be had at the Singapore Dispensary and of Miss Brown, 
Grassdale, River Valley Road, Singapore 
