188 THE CHINESE SUGAR CANE. 
of feculencies, are got rid of entirely, before they can act 
injuriously upon the sugar contained in the juice, which 
they infallibly do the moment we apply heat to the undef: 
ecated mass. Having thus obtained this bright raw 
juice, I next treat it in the manner already specified, 
with heat, infusion of nut galls (or other analogous 
substance containing tannin,) and cream of lime, lime 
water, or other suitable combination of lime, and then 
filter, so as to get rid of the dextrine and caseine, or 
as much of them as is possible, previous to subjecting the 
juice to continuous heat. 
The mere idea of using an infusion of nut galls or 
other tannin substances in sugar making, is not new; 
inasmuch as these substances have been recommended 
and even been tried by W. J. Evans, M. D., of London, 
in whose work, the ‘Sugar Planter’s Manual,” (1847,) 
it may be found at page 101; but it will be at once ob- 
served, that the manner of employing it, or them, as laid 
down therein by Doctor Evans, is ENTIRELY DIFFERENT 
from my own method; for he applies the infusion cf nut 
galis to the raw green juice in the clarifier, just as it 
comes from the mill, and previous to any other defecation 
having taken place. Whereas, I, on the contrary, first 
defecate the cold raw green juice, by means of lime, cream 
of lime, or other suitable preparation of lime, (as herein 
before set forth); and then filter the juice so treated, 
thereby getting rid of the great mass of green feculent 
matter contained in it, and obtaining a clear, bright and 
almost colorless juice or liquor, previous to applying any 
heat whatever, and previous to the venturing upon any 
application of the infusion of nut galls or other tannic 
