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 roo volumes 

 of pure latex with a little water, which will in no way injure the 

 rubber. This will take 8 to 16 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 the latex, keep revolving 

 m the smoke so that each layer of the rubber is smoked and the 

 whole is cured right through and 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 

 camped with the estate or Company mark. 



Allowances— Landed Terms:— The old East India terms 

 rJ? r^ en done avva y with and the only allowance now is i per 

 ent D raft, actual tare, and 2\ per cent, discount, 

 is ah? i N Weight : — On parcels shipped in thoroughly good order 

 °° ut t to | per cent, from Port of shipment to London. 



