36 



FIRST MOLASSES. 



Samples of molasses from the first sugars were taken from time to 

 time from the large tank into which the molasses was pumped after 

 issuing from the centrifugals. These samples therefore represent fairly 

 well the composition of the first molasses for the entire season. The 

 same remarks apply to the mean purity as were made in respect of the 

 purity of the masse cuites the water in the molasses having been de- 

 termined by direct weight. 



The mean determinations by the copper method agree well with the 

 results of double polarization, although, as in the case of the masse cuites, 

 the individual deviations are large. The presence of invert sugar, op- 

 tically active, is clearly shown by the differences in single and double 

 polarization. 



Analyses follow in Table No. 35. 



TABLE No. 35. First molasses, Lawrence, La. 



SECOND MASSE CUITE. 



The samples of second masse cuite analyzed were all, with one ex- 

 ception, taken at the last of the season, when the juice was particularly 

 rich in sucrose. They show therefore a higher purity than the mean of 

 the first molasses. The data in Table No. 36 furnish a further illus- 

 tration of the fact that the molasses from rich juices have a higher 

 purity than that from the poorer sorghum. These facts are suggestive 

 of the idea that the solids not sucrose in sorghum are less melassigenic 

 than those in sugar-cane. 



