EXPERDIEXT? !>' SUGAR MANUFACTURE. ETC. 529 



In 1879 there were made at the Department of Agriculture, with 

 the same apparatus already described for the small mill, 33 experi- 

 ments in making sugar from cornstalks, sorghums, pearl millet, etc., in 

 all of which there were used over 23 tons of stalks. The result of these 

 experiments was to fully confirm all the experiments of the previous 

 rear not only, but to help toward the solution of certain questions of 

 the highest practical importance. In every case, it was found that 

 the quality of the syrup obtained was precisely such as the previous 

 analysis in the laboratory of the juice used made probable. An 

 average of the nine best syrups obtained, showed a percentage of cane 

 sugar present equal to 92.7 of tlie amount originally i^resent in the 

 juice, while an average of the nine poorest (i. e., containing the low- 

 est percentage of cane sugar), showed a percentage of cane sugar 

 present equal to 90.1 of the amount present in the juice. 



Below are given the detailed results of the 33 experiments, and 

 analyses of the juices from which these syrups were made. These stalks 

 were obtained Iroiu neighboring firmers, and, as will be seen, were 

 never in the condition best suited for working — but the results obtained 

 from them are, hov.ever, of great practical value, and are given in 

 detail. 



The last column represents the relative loss of sucrose in makincr 

 syrup, as compared with the glucose present, but gives no indication 

 as to the absolute loss which may have been incurred ; and since the 

 economical production of sugar largely depends upon the amount of 

 this loss, this matter is discussed more fullv in another place, 

 34 



