102 AGRICULTURAL EXPERIMENT STATION. [Jan. 

 Havana Tobacco Stems. 



[Sent on from South Deerfleld, Mass.] 



Per cent. 



Moisture at 100° C, 11.85 



Phosi^horic acid (5 cents per pound), 44 



Potassium oxide (-1^ cents per pound), 6 62 



Calcium oxide, 3.45 



Magnesium oxide, 1.11 



Nitrogen (17 cents per pound), 0.90 



Insoluble matter, 1.35 



Valuation per 2,000 lbs |8 83 



The amount of nitrogen in this sample of tobacco stems 

 (Havana) is exceptionally low, about one-third of that found 

 in other samples offered for sale in our section of the Connect- 

 icut River valley. (See Second Annual Report, page 138.) 

 The difference in nitrogen causes the low valuation per ton, as 

 compared with that of the preceding analysis. The sample 

 was handed to us with the statement that it had been used 

 for imparting the odor of Havana tobacco to other varieties. 

 The odor had been removed apparently by a steaming process ; 

 for the mineral constituents, with the exception of the potas- 

 sium oxide, corresponded fairly with those in the material 

 described in our Second Annual Report. Farmers will do well 

 to be careful in buying the article without stated guarantee of 

 composition. 



HoiJ Refuse. 



[Sent on for examination from Lawrence, Mass.] 



Per cent. 



Moisture at 100° C, 80.98 



Dry vegetable matter, 19.02 



Nitrogen 0.98 



Calcium oxide, 0.27 



Magnesium oxide, 0.10 



Phosphoric acid, . 0.20 



Potassium oxide, 0.11 



Insoluble matter, 0.63 



Valuation per 2,000 lbs., |3 62 



This refuse from breweries differs from the one previously 

 described merely by a larger percentage of nitrogen it contains. 



