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 1 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 > 9 2I -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, Chem. Div. Dept, of Agr., p. 56. 
2 Bureau of Statistics, Treas. Dept., 1885. 
