The sugar which this contains is attracted to
the crystals already formed, and goes to enlarge these rather than to
form new crystals, provided the first are sufficiently numerous to
receive the sugar as rapidly as it can crystallize.
The contents of the pan are repeatedly brought to the proper density,
and fresh sirup added as above described until the desired size of grain
is obtained, or until the pan is full. Good management should bring
about these two conditions at the same time. If a sufficient number of
crystals has not been started at the beginning of the operation to
receive the sugar from the sirup added, a fresh crop of crystals will be
started at such time as the crystallization becomes too rapid to be
accommodated on the surfaces of the grain already formed. The older and
larger crystals grow more rapidly, by reason of their greater attractive
force, than the newer and smaller ones on succeeding additions of sirup,
so that the disparity in size will increase as the work proceeds. This
condition is by all means to be avoided, since it entails serious
difficulties on the process of separating the sugar from the molasses.
In case this second crop of crystals, called "false grain" or "mush
sugar" has appeared, the sugar boiler must act upon his judgment, guided
by his experience as to what is to be done.
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