PLANT ANALYSIS AS AN APPLIED SCIENCE 201 



or favorable to the production of richer juice, may be con- 

 trolled. 



Analyses would show what external chemical conditions 

 are requisite to insure a vigorous growth, and if upon these 

 depends a larger sugar yield. Series of experiments at different 

 stages of growth undertaken to discover the chemical pro- 

 cesses attending growth, maturing, and ripening of the canes, 

 under trial conditions, are necessary to be known by the chemi- 

 cal representative of the producer. 



Plant chemistry, in applying this knowledge to practical 

 agricultural ends, will fulfill a high aim. It may be suggested 

 as a worthy object of agricultural experiment to discover 

 what parts of the residual sorghum, juice, and cane, after the 

 sugar extraction, may serve a practical end. A profitable 

 utilization of these products would assist the improved ma- 

 chinery and new chemical processes in lessening the cost of 

 sugar production. Paper l has been manufactured from the 

 cellulose of the sorghum cane. Future experiments will deter- 

 mine the separation and economic interest of other constitu- 

 ents. 



Very many dye substances of vegetable origin are used 

 industrially. It would detain us too long to enumerate the 

 list, and I shall select a few of the well-known ones for illus- 

 tration: 



The dye-woods imported in a crude state are as follows: 2 



Camwood : Tons. Value. 



1884 659.82 $65,461.00 



1885 730.00 68,721.00 



Fustic : Tons. Value. 



1884 11,811 $177,830.00 



1885 8,090 119,689.00 



Logwood : Tons. Value. 



1884 55,921.59 $875,291.00 



1885 56,507.80 904,205.25 



1 "Sorghum Saccharatum," by C. A. Goessmann. From Trans. N. Y. 

 State Agr. Soc., 1861. Bui. XLI, N. J. Agr. Experimental Station, 1887, p. 23. 

 Bui. No. 14, Ghent. Div. Dept. oj Agr., p. 56. 



2 Bureau of Statistics, Treas. Dept., 1885. 



