12 SUPPLEMENT. 
These several parcels were clarified like the second experiment, 
boiled to 15° and 18° Beaumé, and sect aside till November 2d, when 
I found all but the last day’s work had changed to a thick, liver-like 
mass, resembling good soft soap, very acid, and totally ruined. ‘The 
last parcel, having stood a much shorter time than the rest, was but 
partially affected. It was boiled to proof, and crystallized very well. 
I regret this misfortune less for the trouble it cost me than for the 
failure of the experiment, for it worked beautifully in the first stages, 
and the last grinding crystallized freely. The juice weighed heavier 
than previous or subsequent parce!s, and would probably have pro- 
duced better results. It taught me, however, the danger of delay, and 
also that no injury had been sustained by the juice so long as the 
canes remained unground, the last parcel having crystallized perfectiy. 
FOURTH EXPERIMENT. 
“a tae an Since the 28th October, the weather has been mild 
N. E. clear. and foggy, with heavy rains; temperature varying from 
48° to 60°. A very decidedly increased development of sugar in the 
juice has been ascertained, viz.: 7.29 per cent., instead of five per 
cent., and I have gained some experience; so, instead of allowing the 
syrup to remain from four to twelve days, still containing a great por- 
tion of its fermentable impurities, gradually undergoing decomposition 
and depreciation, I remedy this evil to some extent, as will be seen. I 
also dispense with the fine ivory black and the filtering, thus simplify- 
ing the process. 
Nov. 2, it or Pel a 3 oe D 
Temp. 83°-50°, Cat and ground ity eight feet of a row, one hundred 
NN. E. clear. canes, the upper portions of the stalks turning yellow, 
leaves dead and dry; ground six and seven of the lower joints, pro- 
duced ten gallons juice, weighing 10° Beaumé, nmch less acid than 
previous samples, and barely changing litmus paper, neutralized with 
milk of lime, and clarified at once perfectly with eggs, passed it imme- 
diately through three and a half feet black, and boiled it to 234° 
Fahrenheit ; after standing an hour the crystals were large and sharp, 
but not very abundant till morning, it being boiled too low. 
a ee 
