51 



TABLE No. 52. Differences between single and doulle polarizations of molasses. 



Description of samples. No. 1, tample of first molasses; No. 2, sample of first ino- 

 lasses; No. 3, sample of third molasses ; No. 4, sample of first molasses; No. 5, sample 

 of third molasses; No. 6, sample of third molasses; No. 7, sample of second molasses; 

 No. 8, sample of second molasses; No. 9, sample of second molasses. 



In Table No. 53 are found the analyses of some samples of molasses 

 sent by Mr. W. J. Thompson, of Calumet plantation. In these samples 

 we have again the remarkable illustration of the error into which the 

 analyst would fall who would rely upon a single polarization alone. As 

 a check upon the results the sucrose was determined also with an alka- 

 line copper solution. The percentage obtained in this way agrees re- 

 markably well with that got by double polarization. 



In these cases the total increase is a little less than one-third of the 

 amount of glucose present. 



TABLE No. 53. Composition of third molasses. 

 [Furnished by W. J. Thompson, Calumet plantation, Patterson, La.J 



TAHLK No. 53 (ftia). Composition of third molasses, average sample from Magnolia plan- 

 tation. 



Aside from the larger quantity of water in the third molasses from 

 Magnolia, the chief difference between the Calumet and Magnolia 



