558 
think that the price quoted is distinctly good having regard to the 
age of the tree, ? 
I am, dear Sir, 
Yours faithfully, 
E, V, CAREY. 
To the Editor, 
Dear Sir, 
LANADRON ESTATE, 
Muar , September 24th, j go 2. 
AGRICULTURAL, BULLETIN, 
re Coagulation of Rubber. 
I hope you will pardon me for referring to this matter again as 
I see in the last issue of the “ Bulletin’ you published my corres- 
pondence with the “India Rubber and Gutta Percha Journal/’ I 
have no information to offer and for this reason am anxious to draw 
attention to the subject, which appears to me to have been some- 
what neglected. Now that some estates here are nearing the 
producing stage, it is of vital interest to ail rubber planters that 
the first consignments home produce a good impression. Of the 
samples already sent home, some have and some have not been 
reported upon favourably and in no instance, that I am aware of,, 
lias the price exceeded that of fine Para, which we are told contains 
15% to 18% of impurities. This points to the fact that, at any fate, 
no satisfactory method of coagulation is generally known. Several 
methods have been recommended from time to time, but is it sure 
that any of these bring the rubber to such a state of purity that 
the manufacturers will suffer no loss from washing? I am of opi- 
nion that experiments (co-operative or otherwise) should be carried 
out until all rubber planters here are in possession of a method by 
which this happy result can be obtained. ' 
The reply to my letter in the last Bulletin, already referred to, 
was written by Dr. Carl Weber, an emin< nt chemist, whose spe- 
ciality is rubber and gutta. The treatment he mentions as not- 
being public property, will shortly become so, as he is at present 
on a mission to Central America in connection with the coagula- 
tion of rubber, and the results of his investigations and moreover 
this treatment will be published in full in the “India Rubber and 
Gutta Percha Journal.” These articles should contain most useful 
information, well worth the attention of all planters and the me- 
thods described, tested to ascertain whether thev are applicable 
to this country, 
Referring to the extract from the “India Rubber and Gutta 
Percha Journal ” giving the analysis of a sample of a rubber ob- 
tained in the Malay States, from a HeVea plantation, it would be 
extremely interesting if some of your readers could inform 11s as 
to its origin and also method of coagulation. 
