1892.] 



PUBLIC DOCUMENT — No. 33. 



291 



5. Analyses, etc. — Continued. 



Tobacco Leaves. 



[Sent on from Amherst, Mass.] 



Per Cent. 



Moisture at 100° C, 11.97 



Ash, 20.48 



Calcium oxide, 4.83 



Magnesium oxide, . . . 1.36 



Ferric oxide, 0.22 



Potassium oxide, 6.06 



Phosphoric acid, 1 . 15 



Nitrogen, 2.95 



Insoluble matter, 2.35 



The tobacco leaves contain more than twice the amount of 

 mineral constituents found in the tobacco stems. The ash 

 of the latter contains more phosphoric acid and potash than 

 that of the former, while that of the leaves is richer in lime 

 and magnesia than that of the stems. 



Saltpetre Waste. 



[Sent on from Littleton Common, Mass.] 



Per Cent. 



Moisture at 100° C, 1.23 



Potassium oxide, 2.70 



Sodium oxide, 47 . 99 



Nitrogen, 0.61 



The material contains usually a large amount of common 

 salt, and may be used with good effect upon grass lands. 



Waste from Lactate Factory. 

 [Sent on from Littleton Centre, Mass.] 



Moisture at 100° C. 



Ash, 



Calcium oxide, 



Potassium oxide, 



Phosphoric acid, 



Nitrogen, 



Insoluble matter, 



Per Cent. 



34.11 



60.24 



22.55 



Trace. 



0.67 

 0.68 

 6.92 



