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Essences,
Spc.
155
Essence
of
Pine-apple.
—
Pine-apple
oil
(butyric
ether),
^
oz.
;
rectified
spirit,
3-^
oz.
Essence
of
Spruce.
—
Boil
in
water
the
young
tops
of
the
black
spruce-fir
(
Abies
nigra),
and
concen-
trate
the
decoction
by
evaporation.
Essence
of
Spruce.
—
A
decoction
prepared
from
the
young
tops
of
the
Pinus
larix,
boiled
till
it
evaporates
to
a
thick
syrup
;
this,
fermented
with
molasses,
makes
spruce
beer.
Essence
of
Violets.
—
2
fluid
drachms
orris
root
oil
;
rectified
spirit,
5
oz.