part of both of these mixtures is then
poured into a mortar and stirred, until
the Ingredient assumes tne state 01
thick paste, and beaten with a pestle
until the mass becomes elastic. In
making moldings or castings the mold
is greased and a first layer of the com
position applied arxHit one-tnird oi an
inch in thickness, and this first layer is
backed by another, formed by boiling.
for about three or four hours over
brisk fire, hemp, tow, or other filamen
tous substances, cut small -in the first
mixture of gum and sulphate of potassa.
lfie product is mixed with the second
mixture until the filamentous parts are
divided through the mass and the whole
reduced to a paste.
The PraTeeelawal Title -of Easrtlak
4 MrCTBICB.
