, 1866-09-18

Where the srgments of the Tray meet,
shallow spmicircular dishes of copper
project beyond The cover and bring the
juice into view as it runs down the in
clined plane. The supply of juice is
regulated in a manner singularly simple
and effective.
The delivery pipe from the tank opens
with a tap into "a small copper cylinder
pierced with holes, arranged in the form
of a screw. Any required number of
these holes, which from their arrange
ment may be counted at a glance, may
be kept running, and "a little boy is able
by this means to manage the supply. "How
''Ten sir" make it twelve" eyes sir"
The juice when thinest and therefore
least susceptible of injury flows upon the
hottest part of the tray, where the fierce
flame of The dry megass first strikes upon
It's undrr-Surface 1t is covered lnstan-
%taneouSly with a mass of bubbles which
diminish as it flows onward towards the
lower and somewhat cooler part Of its
course.
The regularity and speed of its passage
are seen as 1t passes in the open air
through the connecting dishes, and a pipe
from the tank runs along the side of the
tray furnished with Il tap over every
other dish SO that amy sudden flash OF
heat Can be at once cooled down. From
lime to time the side shutters are open
ed, and whenever The iuice may incline
to stagnate from the friction of the bub-
bIes, 1T is kept in motion by a light
wooden rake. The depth of the stream
- o-In., 49,. Al,~ I@oN Inlf 80 S,,nh
its temperature as ii leaves the tray rises
very little from boiling point gig Far.
1t is conveyed TO "a small tank whose
cover is level with the floor, filling in its
flow a little ciStern in which may he
placed a saccharometer TO test It's density.
During the three hours | watched it,
this scarcely varied from 80 dogs never
sinking quite to % dogs. nor rising quite
to 80 dogs. From this Tank it is pump
ed to a similar one placed above the
Cylinder. Provision is made for passing
a second time any syrup insutticlently
evaporated over any portion OF the Tray
by~a pipe from the Tank opening with
taps over the external dishes already
described. From the upper tank it flows
through "a regulator like the one at the
head of The tray into the Cylinder. The
fan already mentioned sucks Into The
Cylinder air which is heated by passing
among a large number Of tubes which
carry off the products of combustion on
the mrgass from the furnace 10 the
Chimney. This air on entering the
Cylinder shews a temperature of a little
above 25 Far. It makes its way over
the vastly extended surface of the syrup
spread over broad volutes and among the
countless drops and thin films constantly
falling through the hot blast. The juice
which entered The Cylinder at a density
of 90 or 80 dogs. of the saccharometer
loses while turning its tortuous path all
lis remaining water, and is lifted by a
sort of dredging machine to The mouth of
a shoat from which it flows in o constant
slow stream of Concrete, a.slight motion
suRices to suspend the action OF the
dredger SO as to keep the Concrete UNI
der the action of the hoAblast until it be
sufficiently dried. re Concrete while
yet viscidaud plastic is distributed by
movable cutters to casks or other yes
sells placed underneath to receive It.
When cast in moulds it becomeasi in a few
ho... .o-c.otfy hord ord wivos mt when