35 



lizer in a series of fertilizer experiments with corn. It is stated, how- 

 ever, that it is not known whether the plats on which this test was made 

 had been fertilized alike prior to the time this experiment was under- 

 taken. 



Below are given analyses of tobacco refuse as reported by several 

 experiment stations: 



Plant food in tobacco refuse. 





Tobacco steins 









Experiment stations. 



Whole. Ground. 





mtvn Phos- 



"- -as? 



Potash. 



Nitro- 

 gen. 



Phos- 

 phoric Potash. 

 acid. 



Nitro- 

 gen. 



Phos- 

 phoric 

 acid. 



Potash. 





Per ct. 



1.04 



Per ct. 

 .56 



Per et. 

 4.98 



Per ct. 

 2.74 

 2.23 

 1.98 



Pi r ct. 

 .92 

 .32 



.84 



Per ct. 



10.08 



6.10 



9.76 



Per ct. 

 1.91 

 2.08 

 1.21 



Per ct. 



.52 

 .42 

 .32 



Per ct. 

 1.96 





2.07 



New Jersev c 



1.70 

 2.77 

 1.63 



.68 

 1.03 



.98 



6.17 

 9.08 

 7.60 



1.17 





































a Stem analysis. Connecticut State Station Rpt.1897, p.; dust analysis, Rpt. 1896. 



b Massachusetts Hatch Station Bui. No. 48. 



cStem analysis. New Jersey Stations Bui. 84, p.; dust analysis, Rpt. 1894. 



d Kentucky Station Rpt. 1895. 



e Pennsyh'ania Station Rpt. 1895. 



NICOTINE IX TOBACCO. 



The subject of nicotine in tobacco was investigated by the North 

 Carolina and Virginia stations. The Virginia station l found that the 

 average percentage of nicotine in the air-dry substance of the leaf of 

 White Burley, Medley try or, and Yellow Oronoko was 3.46 per cent 

 when the plants were ready to be topped, 3.79 per cent at the time 

 of cutting, and 5.51 per cent when the leaf was cured. At the time of 

 topping the plants there was little difference in the nicotine content 

 of the leaf of the three varieties, while at harvest time the difference 

 was more marked, the nicotine content in the leaf being 3.21 per cent 

 for White Burley. 4.32 for Medley Pryor, and 3.83 for Yellow Oronoko. 

 In different grades of manufacturing tobacco, the nicotine content 

 ranged from 1.54 per cent in high grade, bright, flue-cured tobacco to 

 5.56 per cent in English shipping. Among these grades the light 

 tobacco was found to contain the lowest and the dark tobacco the high- 

 est percentage of nicotine. 



Results obtained at the North Carolina Station 2 indicated that the 

 nicotine, when the plant is mature, is found mainly in the leaves. 

 Analyses of typical tobaccos grown in the United States show that in 

 the samples tested the nicotine in the water free substance of the leaf 

 ranged from 1.15 per cent in Pennsylvania Seed Leaf to 5.53 per cent 

 in German Spinning Leaf, grow T n in Tennessee. The author associ- 

 ates a coarse, rank growth with a comparatively large amount of nico- 



1 Virginia Station Bui. 52. 



North Carolina Station Bui. 122. 



