32 



except in one or two cases. The lime content varied considerably in 

 all cases and in chlorin and in insoluble matter there was very little 

 agreement. In samples from West Virginia and North Carolina the 

 ash constituents agreed fairly well, but the chlorin varied considerably, 

 varying in the ash from 2.22 to 8.08 per cent. The percentage of ash, 

 nitrogen, and potash was higher and that of lime much lower in the 

 samples from West Virginia than of those from North Carolina. 



The Virginia Station 1 shows that in average composition the leaves 

 and stalks do not differ materially except in the nitrogen, of which the 

 leaves contain about two-thirds of 1 per cent more than the stalks. 

 The roots were found to contain on an average nearly 2 per cent of 

 nitrogen, 2 per cent of phosphoric acid, and 1.75 per cent of potash. 



The chemical changes in tobacco during fermentation as determined 

 by the Connecticut State Station 2 have been discussed under Effects of 

 Fermentation (p. 28). Complete results of the work are given in the 

 following table: 



Analyses of fermented and unfermented leaves. 



Upper leaves. 



Unfer- Fer- 

 mented, merited. 



Short seconds. 



Unfer- Fer- 

 mented, mented. 



First wrappers. 



Unfer- Fer- 

 mented, mented. 



Water 



Ash 



Nicotine 



Nitric acid (N 2 5 ) 



Ammonia (NH 3 ) 



Other nitrogenous matters. 



Fiber 



Starch 



Other nitrogen-free extract 

 Ether extract 



Per cent. 



23.50 



14.89 



2.50 



1.89 



.67 



12.19 

 7.90 

 3.20 



29.39 

 3.87 



Per cent. 



23.40 



15.27 



1.79 



1.97 



.71 



13.31 

 8.78 

 3.36 



27.99 

 3.42 



Per cent. 



27.40 



22.85 



.77 



2.39 



.16 



6.69 



7.89 



2.62 



26.28 



2.95 



Per cent. 



21.10 



25.25 



.50 



2.82 



.16 



6.81 



8.95 



3.01 



28.36 



3.04 



Per cent. 



27.50 



15.84 



1.26 



2.59 



.33 



11.31 

 9.92 

 2.89 



25.52 

 2.84 



Per cent. 

 24. 90 

 16.22 



1.14 



2.35 



.47 



11.62 



10.42 



3.08 

 26.88 



2.92 



Analyses of tobacco leaves are reported by several experiment sta- 

 tions as given in the following table: 



Analyses of tobacco leaves. 



Experiment station. 



Moisture. 



Nitrogen. 



Phos- 

 phoric 

 acid. 



Potash. 



Lime. 



Mag- 

 nesia,. 



Insoluble 

 matter. 





Per cent. 



7.62 

 11.97 

 13.05 



6.80 



Per cent. 

 4.37 

 2.95 

 2.75 

 3.02 



Per cent. 



0.502 



1.150 



.430 



.960 



Per cent. 

 5.738 

 6.060 

 7.240 

 6. 550 



Per cent 

 5.449 

 4.830 

 4.170 



Per cent. 

 0.956 

 1.360 

 2.170 



Per cent. 

 1.943 



Massachusetts State, 1891 3 



Massachusetts State, 1892 4 



2.350 

 4.170 











1 Virginia Station Bui. No. 14. 



2 Connecticut State Station Rpt. 1892. 



3 Massachusetts State Station Rpt. 1891. 



* Ibid., 1892. 



& Kentucky Station Rpt. 1895. 



