36 TIMEHRI. 
* Creoles of from 10 to 15 years, will unload the 
punts and carry their canes to the feeding board. Two 
men will feed an engine of ro horse-power for 4 hhds. 
per diem. 
* boiler-men with one set of coppers will make 4 
hhds. of sugar in about 15 hours. 
If two sets of coppers are employed to make this 
quantity there is a most serious loss both of fuel and_ 
labour, which makes it absolutely necessary to boil 15 
hours with one set, rather than any shorter time with two. 
A box of liquor of 500 gallons will require fully 24 
ounces of lime to temper in a cold state, on an average, 
though it frequently happens that one-half that quantity 
will be sufficient, and that as often double is required, 
according to the nature of the season and the age and 
quality of the cane. 
The lime aéts by neutralizing the acids existing in the 
cane juice, and rendering the mucilage insoluble, which 
rises to the surface in the boiling process and is skimmed 
off. In this stage the acetate of lime is still held in 
solution by the cane liquor, and as, by the ordinary pro- 
cess, no separation afterwards takes place, it destroys the 
colour and makes the manufaéture on the wall very im- 
perfect. The addition of alum in small proportions at 
this stage would perhaps be an improvement. The sul- 
phuric acid would unite with the lime and the acetous 
with the alumine basis —making one insoluble compound 
and the other a harmless neutral. 
The cane juice of Demerary contains on an average 
about 1 lb. of sugar to seven quarts of liquid. With good 
works, it is reduced to sugar in quantities or strikes of 
—* Left open in MS. 
\ 
bs 
