6 02 
cipals’ firms, with the names of the towns where they reside, Mr, 
Hill, when in their districts, will send for vour principals and 
explain to them the agricultural and commercial potentialities of 
this country and give them any information they may desire — and 
we hope that you will amongst yourselves look for an energetic 
leader and form some Scheme by which both you and the Govern- 
ment will derive permanent benefit and profit. 
You will bear in mind what I have said as to your present practi- 
cal exemption from all taxation. 
CARGOS A, 
Kuala Lumpur , 12th November 1902. 
CORRESPONDENCE. 
COAGULATION OF RUBBER. 
LANADRON ESTATE, 
Muar , /si December, 1902. 
To the Editor, 
AGRICULTURAL BULLETIN. 
Dear Sir, 
Following up my letter to you of September 24th last, the 
articles in question by Dr. Weber are contained in three issues of 
the “ India Rubber and Gutta-Percha Trades’ Journal ”, dated Sept. 
:5th, 29th and Oct. 13th respectively and I am sure are well worth 
the careful attention of any one interested in rubber planting. The 
main points particularly relating to co-agulation are as follows: — 
I. That the so-called co-agulation of rubber by acids or alkalies 
is erroneous in that it is only the albumen which is co-agulated by 
these substances and not the India-rubber itself. 
H. That the albumen contained in latex is very harmful in 
many respects, and that it ought to be entirely eliminated from «the 
-milk before attempting to co-agulate the rubber. 
III. The method recommended for co-agulation is, briefly, as 
follows: — 
First mix the latex with water, at least five times the volume of 
the latex. In cases where the latex is thick, actually boiling water 
may be used to advantage. In this state, it can be easily strained 
to remove all impurities. 
After this add formaldehyde in the proportion of 8 oz. to a 
petroleum barrel, stir it well and let it stand for 24 hours, when 
the rubber will collect on the top andean be lifted out in one mass. 
In order to remove any traces of albumen that may be sus- 
pended, the rubber should be cut into strips and subjected to a 
thorough washing upon an ordinary rubber washing machine. 
I hope that my letters may create some interest in the question 
and result in some experiments being carried out and duly recorded 
for publication in the “ Bulletin.” 
