26 



Yield. 



(A) The sirup, by the ordinary process, boiled to string proof, yielded 2,535 pounds 

 first massecuite, and 1,370 pounds lirst sugar polarizing 84.2. The yield of sugar 

 per cent uiassecuite was 54. 



The molasses from the above gave 375 pounds second sugar, polarizing 79.9. 



(B) That portion of the sirup treated by the alcohol process yielded 2,212 pounds 

 first massecuite, and 1,330 pounds first sugar, polarizing 93.7. The yield of sugar 

 per cent massecuite was 60.1. 



The second massecuite was melted by the carelessness of a workman in placing it 

 too near the steam pipes, hence no statement of this sugar can be given. 



REMARKS ON THE YIELD. 



In both these experiments there has been a heavy loss of sugar after 

 reaching the sirup stage. Up to the sirup there was a considerable loss 

 by inversion. The weights of the massecuites, allowing for the solids in 

 the press cake, bear the proper relations to one another, but since there 

 was a large known loss of sirup at the still there must have been a loss at 

 the vacuum pan to ofl'set it. Extreme caution was necessary in boiling 

 the pan to reduce the risk of loss, but even then there were undoubt- 

 edly losses at this point in the manufacture. The loss at the pan in 

 the A portion was probably due to the liquor boiling over. In the 

 case of the B portion, entrainment was probably the cause of the loss. 

 The sirup boiled very freely. 



* Corrected for samples and skimmings. 

 EXPERIMENT NO. 4. 



The cane employed in this experiment was Variety No. ICO. When 12| rows of 

 cane had been cut the work was stopped by rain. The cane was cut September 30 

 and left in the shed until October 3, when, the rain not ceasing, it was worked. 

 All the sirup was treated with alcohol and boiled to grain. The grain was very fine, 

 but nevertheless an attempt was made to centrifugal it, but this ended in failure. 

 An effort was made to melt this massecuite, but the mixer leaked ao badly that the 



