100 PROCESS OF MANUFACTURE. 
ciently deep at the mouth to give it a slight inclination up- 
ward from the level of the grate bars, thus securing a good 
draught, and throwing the flame closely against the bottoms 
of the more depressed pans, C and JD, at the after part of 
the range. A great saving of fuel and a more uniform 
distribution of the heat is thereby secured. The division 
of the evaporating surface into three separate sections, 
which is indispensable according to this arrangement, is a 
security against its being warped by heat, which always 
occurs when a long unbroken surface is used, and the sep- 
arate sections may be packed for transportation in small 
space and carried without injury. 
The cooler is simply a large shallow wooden box of the 
shape represented in the drawing, and made impervious to 
liguids by iron paint. It may be mounted upon a truck, 
and at the close of each day’s boiling may be run along a 
tram-way into the draining-room, and emptied of its con- 
tents. 
The evaporating train, tanks, etc. being arranged as de- 
scribed, the freshly expressed juice passes into the pipe 
through the wire strainer, which separates all the coarser 
fragments of cane pith, ete., and flows directly into the 
tank. The outlet of the conducting pipe should be 
close to the partition in the tank, so that by means of a 
short, movable gutter or T-shaped spout, the current of 
juice may be turned into either division of the tank at 
pleasure. Hach division, as already stated, should be ca- 
pacious enough to hold as much juice to within six inches 
of the top as the mill is capable of expressing in about one | 
hour. Twococks or molasses gates (one for each division) 
must be inserted in the side of the tank within about four 
inches of the bottom.* The tank should be made of such 
* Only one of these is represented in the engraving. 
