55 
N-B . — The aim of planters must be to get all their rubber as 
even in quality as possible — clear, bright and transparent with an 
even surface- — colour light for preference, also strong and resilent 
as possible. Uniformity both as regards quality and colour are very 
important, so that manufacturers can rely on their purchases begin 
regular in both respects and not mixed and uneven. 
All rubber should be dried in dark drying rooms and never 
exposed to the sun or bright daylight. Non-exposure to light also 
applies to rubber dried in vacuum driers or by any other patent 
method. 
COAGULATION. — This can be done in pans or tubs, with the aid 
of a little Acetic Acid, say one volume of pure acid to ioo volumes 
of pure latex with a little water, which will in no way injure the 
rubber. This will take 8 to x6 hours. Latex coagulated in tubs on 
pivots with a little water and acetic acid well mixed insures evenness 
of quality of that particular collection, besides saving a great deal of 
space, also the latex is easily measured and the coagulated mass is 
quite easily cut into convenient chunks for the crepe machine. The 
Michie Golledge Coagulator is a very quick and satisfactory 
coagulator, taking only a few minutes in, the process. 
Coagulating by smoke, as done in the Amazonas, is quite in its 
experimental stage, but samples of rubber so cured are undeniably 
stronger and better preserved than ordinary cures. A process is 
wanted to smoke, coagulate and cure the latex at one and the same 
time. The rubber is cured by the Natives in the Amazonas on a stick 
or paddle that they dip continuously into thfe latex, keep revolving 
in the smoke so that each layer of the, rubber is smoked and the 
whole is cured right through an(^ not on the surface only. 
PACKAGES and PACKING : — Strong boxes or cases any size from 
i to 2 cwt. No paper or other material should be' used". It must 
be remembered that rubber packed in a damp condition arrives 
mouldy and sticky and that heat and tackiness nearly always spreads 
and where mixed with sound rubber invariably spoils it. 
SORTING: — As far as possible, even as regards both quality and 
colour. Pale should be kept from dark and any inferior thrown out 
and sent home separately. 
Drying : Great care should be taken to ensure thorough drying, 
so that biscuits and sheets especially should be dried right through 
and not superficially only. Badly dried biscuits and sheets sweat 
and the resin exudes and causes mould and very often stickiness 
on the voyage. 
MARKING : — Block, biscuits and sheets and all cases should be 
stamped with the estate or Company mark. 
Allowances Landed Terms: — The old Kast India terms 
have been done away with and the only allowance now is ^ per 
cent. Draft, actual tare, and z\ per cent, discount. 
Loss IN Weight: — On parcels shipped in thoroughly good order 
is about | to f per cent, from Port of shipment to London. 
