New-York tribune., 1899-03-05

layer without touching or rupturlng 'hls, ,', im
rapidly flowing milk-like emulsion - o',,,.U nr Of
through improvised tunnels made OF leaves VI VI
bark into hemispherical basins maut u o'
half Of the oval Of spherical frult oi thc s souim
bearing tree (calahazal Cucur1id az c,r g. siy
crecentia species, capable Of holding IouI ~ %"
n,nts each In the case If the Flous c'astlCd,
which sometimes is a conSresatlom Vi ,on',
ard not all sides are equally acceSs'ptc' ~ d a % r"n9
nernendicular incision should be made from near
Tho hase and extending high up the tTuhN' On
each side Of this line and meeting IT, numerous
small obque cuts should compete the "PrId,
ton For the CastillOa Kind the best ana ih"9t
ad,isabIe system to be adopted is To make a
double incision low i'm the trunk in the FORM Oh
two or three VS. connected together accoruils
to the size Of the diameter Of the tree Inc cut
is made with "A small blade Of sharp KNIFE by
Imbedding it obquely into the bark without
touching the cambium layer, ana cutting OH lhe
loose bark by another incisiOn an men above
the first These mcisions must meet al the
base all the way through. The knife used must
have a blade Of such shape that it will not mack
the bark and iniure the wood so as to enable
the wound to heal and ccatrise soon after the
sap is collected. If the tapping is performed
carefully, scientifically not allowing the tree To
cvcrblccd and that can be obviated by the
baCll incisiOns lastly menticned-the process can
be repeated every year for fifty years or more;
more so if tine wound is covered with wax or
clay Immediately after the sap ceases to run.
The mex. day after tapping the sap IS cot
lecfed, placed in carthcn or ronWare NeSSels'
Nh,Oped with A weed called coyuntla, when Is
an astrigcnt and causes the milk to curdle
theieby separating the crude rubber rms can
also be disunited by heating the milk gradually
in Inc vessel to about 100 degrees to 10 de-
gretl Fahr.. and adding and stirring whlle ho'
the expressed juice or the decoction OF the
leapA or vine Of joamole. the morning glory
din seed) Of sweet potato and Of hana tcai-
onysion specosum), in the proportion OF one
pint OF same TO one gallon Of rubber milk. rms
decoction coaglIlates the rubber juice and sep
arates the crude rubber. The coaguiated
emulsion is then dumped into barrel vertically
located having a faucet two-thirds full OF
solution Of five pounds OF chloride or subcar-
bonate Of soda i'm the above quantity or water
The whole mass is then agitated every now ana
them After a lapse Of twenty-four to thirty
six (Aurs the water is allowed to run out
third ah the faucet; this operation OF Washing
is ie about three or four times, until the
crude rubber becomes white. The crude rubber
is heated gradually again. In sufficient amount
Of water to cover it, until it is softened. when 1t
is placed IN moulds having numerous small
holes one inch in depth inside. Of size to al
low the top OF regular size letter press to go
i'm tight and the inside covered with loose
muslin or white lining. The mass is pressed for
three days when il becomes a rectangular cake
Several Of these cakes placed in clean
sack weighing about a quintal 600 lbs) each.
BY this process of preparation about 10 per cent
of the cru'e rubber remains from the original
amount Of milk after the water and other in
gradients have been eliminated by evaporation
and absorption.