EXTRACTION TEST. 367 
If transportation to the United States is included in the cost 
of production, the cost per picul will be increased to 8.25 pesos. 
CONCLUSIONS. 
Our test of a modern central was made when the cane was 
overripe, the workmen inexperienced, and the filter process over- 
worked. In spite of these and other disadvantages of pioneer 
work, the plant produced a high grade of sugar (98.4 per cent) 
and a yield which, figured on a basis of 100-per-cent sugar, 
amounted to 75.01 per cent of the sugar introduced. The results 
obtained are low for a central, but even so the margin of profit 
is sufficient to show the great superiority of modern methods 
of sugar refining over the prevailing native process. 
Moreover, the conditions of the sugar market are rapidly 
becoming such that the old process will soon fail to give profitable 
returns. It is wasteful and can not be depended upon to pro- 
duce a No. 1 sugar, whereas with the central process the best 
quality of sugar can always be produced, and a high-grade sugar 
is the only quality from which satisfactory profits can he 
expected. 
In view of these facts, the authors urge the immediate in- 
stallation of modern methods of sugar refining, and it is their 
firm belief that unless this is done the local sugar industries 
will suffer serious losses in the near future. 
