In this way the evaporation is effected without
so great expenditure of fuel as is necessary in open pans, or in single
effect vacuum pans, and the deleterious influences of long continued
high temperature on the crystallizing powers of the sugar are avoided.
From the double effects the sirup is stored in tanks ready to be taken
into the strike pan, where the sugar is crystallized.
THE FIRST CHANCE TO PAUSE.
At this point the juice has just reached a condition in which it will
keep. From the moment the cane is cut in the fields until now, every
delay is liable to entail loss of sugar by inversion. After the water is
put into the cells of the battery with the chips, the temperature is
carefully kept above that at which fermentation takes place most
readily, and the danger of inversion is thereby reduced. But with all
the precautions known to science up to this point the utmost celerity is
necessary to secure the best results. There is here, however, a natural
division in the process of sugar making, which will be further
considered under the heading of "Auxiliary Factories." Any part of the
process heretofore described may be learned in a few days by workmen of
intelligence and observation who will give careful attention to their
respective duties.
BOILING THE SIRUP TO GRAIN THE SUGAR.
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