SUGAR AND SUGAR MAKING. 114 
darker, in proportion to the speed with which it is run 
off. 
Filtering in this way is a very expensive process even 
in large cities where labor is cheap, the bone black requir- 
ing to be reburned as soon as it has filtered three times 
its own weight of sugar. I would not, therefore, advise 
the use of filters on a sugar estate or farm; the true 
policy of which ought to be to make good Muscovado, 
and leave refining to the cities, where all the facilities 
exist for doing it to advantage, and with an economy 
which the planter or farmer may seek in vain to imitate. 
The syrup, after passing through the filters, is ready for 
the vacuum pan. 
In the preceding remarks on the various apparatus for, 
and processes of, manufacturing sugar, I have not at- 
tempted clothing my subject with any of the elegances 
of language, but more to convey in as simple a manner 
as possible the information required, in the hope that it 
might assist in developing a new branch of industry in 
the community, and so add to the wealth and prosperity 
of the country at large. 
GROUND PLAN FOR SUGAR ESTATE BUILDINGS. 
The following cut represents the ground-plan of build- 
ings for a sugar estate, with the engine house, boiling 
house, cooling and purging house, arranged on a combi- 
nation of the best features, gathered from various sugar 
estates of Louisiana and Cuba: 
As will be seen in the cut, the engine house, boiling 
house, and cooling and purging house, are all built sepa- 
