35 



TABLE No. 33. First masse cuiles (mill), Lawrence, La. 



The high parity of the masse cuites, as shown in Table No. 33, as com- 

 pared with the juices and sirups, may be accounted for as follows : 



In the latter the percentage of total solids was calculated from the 

 readings of the saccharometer ; in the former by drying and direct 

 weighing. The results of last season's work, both with sugar-cane and 

 sorghum juices, show that by the use of the spindle the percentage of 

 total solids found is always too high. The purity of the juices, therefore, 

 is higher than indicated by the analyses. A note on the subject will be 

 made subsequently. 



The direct polarization of the first sugars is given in Table No. 34. 



In these sugars there was only a trace of glucose, but no attempt was 

 made to estimate its quantity, not even by Soldaini's reagent (carbonate 

 of copper dissolved in acid carbonate of potassium). For the same 

 reason a double polarization was not necessary. 



TABLE No. 34. First sugars, Lawrence, La. 



'Cut strike. 



