in the torrid zone.

Mr. Felton Mathew, merchant in London, obtained a patent for the
above-mentioned object, which may be found in the Repertory of Arts,
vol. V. page 73. Mr. Mathew used a press with a lever, the bottom made
with stout deal or oak timber, fit for the purpose, raised with strong
feet a convenient distance from the ground, so as to admit the beer to
run off into whatever is prepared to receive it; into the back of it is
let a strong piece of timber, or any other fit material, to secure one
end of the lever, the top of which should work on an iron bolt or pin;
when the lever is thus prepared, get your yest into hair-cloth bags,
or, if not conveniently had, into coarse canvas bags; when filled, tie
them securely at the mouth, and place one bag at a time in a trough of
a proper size with a false bottom full of holes, on this bottom should
be placed an oblong perforated shape, about the form of a brick mould;
in this oblong shape or box, without either bottom or top, is placed
the bag containing the yest, on which the press is let down, and
gradually forced, as the beer exudes, or gradually runs off; when no
more liquid runs from the shape, the press is taken off, and the bag
opened, its contents taken out, which will crumble to pieces; in this
state it should be thinly spread on canvass, previously stretched in
frames, which will permit the heated air of the kiln to pass through it
in all directions, and thus gradually finish the process to perfect
dryness, which will be completely effected by ninety degrees of heat:
at the commencement of the drying, it would be proper to pass the edge
of a board over each frame, in order to reduce the lumps of yest, and
thereby make them as small as possible. When completely dry, put it
into tight casks or bottles so as to exclude air and moisture: thus
secured, it will preserve good as long as wanted in any climate, and be
found a valuable article of domestic economy, as well as medicine. When
to be used, the necessary quantity should be dissolved in a little warm
water, at the temperature of from eighty to ninety degrees of heat,
with the addition of a proportionate quantity of sugar; the addition of
sugar is only recommended when used to raise bread, but not when given
as medicine; in the opinions of several intelligent men, this is
considered the simplest and most effectual method of preserving yest,
and, as such, is hereby strongly recommended.

_To make a sub