222 SORGHUM. 



Per cent. 



Ether extract 0.82 



Alcohol extract 70.15 



Water extract 8.23 



Insoluble 20.80 



100.00 



Per cent. 



Albuminoids (nitrogen + 6.25) 6..37 



Ash 5.87 



Sucrose 39.96 



Glucose 12.32 



Water 3.06 



Undetermined 32.42 



100.00 



The ether extract coutains free organic acids, chlorophy], fixed oils, 

 fats and waxes, volatile oils, but no mineral matter. 



The alcohol extract contains mineral matter, nitrates, organic acids 

 and their salts, glucosides, coloring matter, sugars, albuminoids, and 

 non-albuminoids, nitrogenous matter, amides, etc. 



The water extract contains soluble albuminoids, gum, pectin matter, 

 dextrinoid bodies, and coloring matter. 



The insoluble matter consists of crude fiber and mineral matter, 

 silica, etc. 



Now, it will be seen that there was present in the total solids of the 

 fresh juices 81.46 per cent of the two sugars, but in the total solids of 

 the dried juices there was only 52.28 per cent of the two sugars. Also, 

 there was in total sugars of the fresh juices 91.35 per cent of sucrose 

 and 8.65 per cent of glucose ; but in the total sugars of the dried juices 

 there was only 76.44 per cent of sucrose and 23.56 per cent of glucose. 



The above results are important, as showing how liable the juice is 

 to undergo fermentation, and loss of sugar, during evaporation even, 

 unless, by means of defecation, certain impurities be removed; and, 

 although many farmers still persist in the manufacture of syrup, 

 " wnthout chemicals," as they say, by simply boiling down the freshly 

 expressed juice, removing only such impurities as may be brought to 

 the surface as scum during the evaporation, it is altogether likely that 

 they have a loss of sugar greater than would occur in the sediment and 

 scum of a good defecation, besides producing a syrup which is likely to 

 have poor keeping qualities, owing to its tendency to ferment upon the 

 approach of warm weather. 



The analyses of the suckers (No. 7), and of the leaves from the 

 suckers (No. 8), are interesting, and of practical value. 



These suckers were those that had sprung up from the roots of those 

 stalks which had been previously cut up for analyses ; and it will be 

 observed how low is the content of sugar, and how^ great the percent- 

 age of ash, in their juices. The large percentage of nitrogen is also 

 noticeable, as also the ether extracts of the leaves, owing to an excess 



