138 



Experiment Station Beport. 



Havana Tobacco Stems. 



[Sent on by S. G. Hubbard, Hatfield, Mass.] 



Moisture at 100° C, . 

 Dry matter, 

 Crude ash, 

 Nitrogen in dry matter. 



11.05 



88.95 



13.30 



2.91 



One hundred parts of dry matter contained : — 



Potassium oxide, 

 Sodium oxide. 

 Calcium oxide, . 

 Magnesium oxide, 

 Phosphoric acid, 

 Sesquioxide iron. 



Valuation per ton of 2,000 lbs. for fertilizing purposes, 



3.76 



.20 



4.15 



1.53 



.50 



.16 



$14 28 



The valuation is based on the prices of the past year 

 (1883) : it is safe to count one-tenth less at the prices of 

 the present year. 



Kentucky Tobacco Stems, Ground, 



Moisture at 100° C 12.18 



Dry matter, 87.82 



Crude ash (in organic matter), 15.00 



Nitrogen (in organic matter), 2.616 



Chlorine, 425 



Sulphur, 275 



Potassium oxide (4J cents), 8.816 



Sodium oxide, .161 



Magnesium oxide, 1.395 



Calcium oxide, 3.720 



Phosphoric acid (6 cents), .726 



Insoluble matter, 1.618 



Valuation per 2,000 lbs., $17 78 



In this case the valuation is based upon prices current in 

 1884. Nitrogen has been valued at 18 cents per pound, 

 phosphoric acid at 6 cents, and potash, 4^ cents. Both of 

 these refuse materials from the tobacco industry are quite 

 valuable for manurial purposes. 



