The mirror. (Stillwater, Minn.) 1894-1925, 1917-03-29

O:-Please tell me how, where, and from what sources
wild rubber is gahered?-J. F. B.
A-The first Glass; wild rubbers, collected from
which have grown wild and where cultivation processes
whatsoever have been used These
shrubs found mostly in Northern South America,
Mexico, Central Africa and Borneo
The finest rubber in the world is Fine Para. and is
gathered in the Amazon regions of South America. This
rubber has been gathered practically the for
The natives into the forests and selecting
rubber V' shaped grooves in the bark special
knife made for the these being in herring
bone fashion dagonay around the tree with main groove
vertically down the like the Main vein leaf
The laex, milkke liquid, of the tree, from which the
rubber taken, flows from these veins and down the
vein into little cup which the natives place receive it,
After the little filled they gathered and brought
into the rubber camp and there the atex coaguated by
of smoke This done by the paddle which
alternately dipped into bowl of the atex and then evoved in
the smoke from wood palm but fire. This smoke
have preservatve effect the rubber we'll drying
and causing harden the paddle each successive
layer of the aex causing the of the rubber ball biscuit
increase When biscuit of sufficient size has been thus
coaguated is removed from the paddle and is ready for
shipment countries where rubber products manufactured
Para rubber sold in three grades Fine Para which is
the carefully coagulated smoked rubbe Medium
PARA which rubber gathered and smoked in the way
Fine, but which has had insufficient smoking and therefore,
subject deterioration due oxidation, and
from the rubber after the have been removed.
This latter grade has generally large percentage bark and
other foreign substances mixed with and subject
deterioration than is Medium Para, oftentimes
smoked at ALL
Another important grade of rubber coming from South
America is Caucho This grows similar the Para
and the rubber is gathered similar Manner but cured by
adding the aex alkaline solution and allowing the
whole dry in the The value of this rubber be
greatly improved by better methods of coagulaon.
From Central America and Mexico the Caslloa
rubber This rubber is gathered from in very similar
PARA and coaguaed by being mixed with juices
which obtained by grinding certain plant which
juice Castloa spread bull hides, where
it allowed dry in the after which the rubber rolled
up and is ready for shipment. Castloa gathered mostly
from wild trees but in Mexico has recently been cultivated
extent.
From Mexico also get Guayue This rubber is
obtained from certain species of shrub the shrub being
down and fed into grinding pebble mill where the
branches crushed and ground and mixed with water and
the rubber which contained in little particles all through the
wood, is worked out, being taken from the pebble mills in
chunks as large a mans fist.
From Central Africa and from Borneo the so
called African gums such Congo, Soudan, NASSAU Lapori
Manicoba Ponanic, Some of these rubbers gathered
from trees but CT them from vines and and the
methods of coagulation varied Practically all of
dried the These rubbers all of lower grade than
the Para rubbers of South America