CRYSTALLIZING VESSELS. 118 
the groove, and burnt out with a hot iron from the inside, 
so as to form a small cavity surrounding the hole, in conse- 
quence of which not a drop of syrup will remain after 
draining. . . . Such vessels combine every possible 
advantage in crystallizing and purging with the nea 
site strength. 
“The crystallizing vessels rest upon strips of wood two 
inches thick and three inches broad, which are fastened to 
and supported by upright posts eight or ten inches high, 
at the distance laterally of ten inches from the middle line. 
Troughs connecting with a cistern on a lower level receive 
the molasses as it drips from the sugar.” 
These vessels, when filled to within 3 inches of the top, 
will hold about 75 gallons of syrup for granulation, weigh- 
ing nearly 1000 pounds, of which one-half, or 500 pounds, 
will be good dry sugar. The depth of the crystallizing 
mass in these boxes may sometimes be diminished to 3 
inches at the sides where the bottom is most elevated, and 
9 inches in the center, when there is reason to apprehend 
any difficulty of drainage by reason of the presence of an 
undue amount of grape sugar, or otherwise. After the 
molasses has all drained out, this depth will be much di- 
minished, and the large surface of sugar exposed permits 
it to dry speedily. 
The number of these boxes that will be required will of 
course depend upon the amount of work to be done, and 
the length of time that must elapse before they can be 
refilled and used again. ‘Two weeks is as short a time as 
can be reckoned upon for the completion of the erystalliza- 
tion and drainage. It will be found that one of these ves- 
sels will be required for each 450 or 500 gallons of juice 
delivered by the mill during that period. 
Close the openings in the bottom of the box with long, 
_ smooth wooden plugs, abruptly pointed, which may be 
10* 
