40 



Yield. 



The sirup in this experiment was boiled to string proof, no attempt being made to 

 form grain. The massecuite weighed 2,168 pounds and yielded 696 pounds of lirst 

 sugar polarizing 89.4. The yield of sugar per cent massecuite was 32.1. 



The second sugar was left in the wagons at the end of the season. 



Resume of yield. 

 TJBEHLAKA CANE. 



Clean cane worked tons.. *9. 539 



Topped cane worked do ... *11. 105 



First masse cuite obtained pounds . . 2, 168 



First sugar obtained (89.4 polarization) do 696 



First sugar reduced to 100 polarization do 622 



First sugar per ton clean cane do 72. 9 



First sugar per ton topped cane do 62. 7 



First sugar 100 polarization per ton clean cane do 65. 2 



First sugar 400 polarization per ton topped cane do 56. 1 



Yield of sugar per acre do 806 



The Ubehlana cane contained very little sugar and the juice was of low purity. 



GENERAL REMARKS ON THE SUGAR-HOUSE WORK. 



The principal losses of sugar were at the still and by entrainment 

 in the vacuum pan. Both these losses were such that they could not 

 be avoided with the machinery as now constructed. In some instances 

 these losses were very heavy, amounting to 40 pounds or more of sucrose 

 per ton of cane. In working on a large scale such losses would either 

 be avoided or reduced to a small number of pounds. 



The yield of sugar in the greater number of the preceding experi- 

 ments by both methods of working was largely in excess of that ob- 

 tained by the sorghum sugar manufacturers. This was partly due to 

 the facilities for working the cane very promptly after cutting. The 

 work in the sugar- house was prompt, rapid, and regular, all three being 

 conditions essential to a large yield. In two experiments, viz, Nos. 11 

 and 12, the cane, while rich in sugar, produced a massecuite which was 

 difficult to centrifugal. Certain varieties of cane furnish juices that 

 are much more manageable than others and notwithstanding a lower 

 sucrose content will yield a larger proportion of sugar. 



It is doubtful whether the cane employed in experiments Nos. 11 

 and 12 would have yielded a massecuite by the ordinary process, that 

 could have been promptly centrifugaled. 



The most prominent advantage of the alcohol over the ordinary pro- 

 cess is that it yields a first sugar of good color and of high polarization. 

 With the exception of two or three strikes of sugar which were left in 

 wagons a short time, the average polarization of the first sugars (un- 

 washed) by the alcohol process was 92.6 and of first sugars by the 

 ordinary process 84.7. 



* Corrected for samples and skimmings. 



