, 1890-04-05

49, V00O 70 w RNA SOhV
extraction by mill or diffusion and get
more sugar out of it than any other man
IN the state with rs per cent extraction.
We don't pretend to equal him at Magnolia
in the work of the Sugar House after the
juice IL once extracted.
Again, comparative results estim ated in
sugar give us a poor means of ascertain.
ing what we want to know, for the reason
that one crop of cane may be very rich and
another very poor. We were greatly ex-
cited last spring by a gentleman from
Honolulu, telling us he got 288 pounds of
sugar per ton of cane with an ordinary
double mill but when we learned that he
mad from Is to Is per cent sucrose, we
were only surprised that he did not get
more.
So MIR. Thompson's cane may he very
rich and MIR. McCall's very poor. So we
can't tell anything about the relative
dlt erence in: milling and diffusion by
the sugar obtained by the different factO-
RES. What we want to Know is what is
the best average extraction of Juice from
the cane Obtaintd 10y our best mills, as
Sg"lnSt the best extraction obtained by
our best diffusion batteries. When we can
ascertain the differe nee in extraction we
know 1t all, for the trea tment Of th" juice
aIter extraction is prec iSely The same in
both CAGES.
| think it is fair to assume that the mills
have about reached their maximum extrac-
ton. With eight heavy rollers and plenty
OF saturatlon, l don't see how anybody cal
get more of the juice out of the cane than
our friend Mr.. Thompson obtains. On the
OCner hand diffusion has only just begun,
ana think that We are now agetting only
she minimum extraction which we ought
to hope to obtain.
In the case of Magnolia, / consider it
very poor indeed. There we nave a bat
terry too small tor our work. We are
obliged to rush the twater through the
battery IN order to get off the crop in any
season. We can scarcely have a cell
under pressure at all. The liquid never
atopS, but simply runs through. Mr..
Spencer thinks if we co uld have each cell
under pressure three minutes it would
greatly increase our extraction, or if We
could have q finer chip, which, by the way,
We must have, we would greatly increase
the extraction. To sum up We must have
. large battery, 30 as to let each cell be
under pressure say three minutes, and u
cutter which will give us a chip as fine
again 90 we no have, and it is not too
much to say that only a trace of sugar will
DE- detected in the g Exhausted chips.
Calumet reports in 1888 and 1889 on one
run an extraction with ma ceration of 1851
per cent. Whether it increased this ex-
traction after the addition of its third mill
l do not know, but / can hardly credit a
better average extraction than this until
we learn it. from Mr.. Thompson. / am not
certain, but / think our average extraction
during the last season was SO per cent OF
the juice in the cane. If l am correct, we
nave here with the best milling 1851 per
cent extraction, aud by very imperfect
diffusion Sc per cent extraction, or an in
crease of 9.l4 per cent by diffusion over
milling.
A [ Jude stand il the average for
CalumSf for 1888 and 1899 was TAI say,
20 per cent extraction, while at Magnolia
we had last year about SO per cent. Here
May De said to be about the difference in
faiour of diffusion, 80 far as we have de-
VelOped tor al out Is per ~cent-which
gam ls competent to turn disaster into
success.
think 1t Is safe To say that with diffu-
sl0ii, aS. we work it TODAY, we can, ell the
conditions being the same, increase our
yield over the best milling twenty five
pounds of sugar per ton of cane. | don't
nlean to say that Magnolia can with her
diffusion battery beat Calumet with her
mill twenty-five pounds ton of Gale. But
mean that Mr.. Wybray Thompson can
take the Magnolia diffusion battery and
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