28 



The density of the sirup was very materially reduced in the distillation process, 

 but, as has been stated, this can not be avoided with the apparatus as now con- 

 structed. In actual practice this would necessitate a large increase in the coal con- 

 sumption. It is believed that with apparatus constructed after the experience of 

 this work this increase in coal consumption could be almost entirely avoided. 



Filter-press cake. 



The following is the analysis of the filter-press cake : 



Total solids per cent.. 51.25 



Sucrose do ... 12. 80 



Alcohol (absolute) do ... 15. 16 



Weight of filter-press cake pounds. . 250 



The loss of sucrose in the press cake was 32 pounds and of alcohol 37.9 pounds. 



Yield. 



(A) This sirup was boiled to string proof. Experience demonstrated that with the 

 email pan, in boiling sirups not treated with alcohol, nothing is gained by adding 

 sugar as a nucleus upon which to build grain. 



The weight of first massecuite obtained was 2,671 pounds and of first sugar 1,253 

 pounds. The sugar polarized 85.4. The yield of first sugar per cent massecuite was 

 46.9. 



(B) In this experiment the sirup treated by alcohol was concentrated to about proof 

 in the vacuum pan and then 50 pounds of very fine-grained sugar were added. The 

 man-hole cover was removed and the sugar thrown directly on the concentrated 

 sirup. A small quantity of grain was formed in addition to that supplied by the 

 sugar. In all the strikes to which sugar was added this plan was followed. 



The weight of first massecuite obtained was 2,431 pounds and the yield of first 

 sugar 1,402 pounds, or 57.7 per cent massecuite.. The first sugar polarized 93.7. 

 Deducting 50 pounds (the sugar added), we have net yield of 1,352 pounds sugar. 

 This deduction is, perhaps, not a perfectly fair one, since a portion of the 50 pounds 

 sugar was left in the molasses. 



In both these experiments ("A" and "B") the second massecuite was not ready for 

 the centrifugal at the end of the season. 



Ite'sume' of yield. 

 EARLY ORANGE CANE. 



* Corrected for samples and skimmings, t Fifty pounds deducted for sugar added. 



