EXPERIMENT STATION. 



709 



Nitrate of Soda. 



[Sent on from Asliliy, Mass.] 



Sulphate of Magnesia. 



[Sent on from Amlierst, Mass.] 



rer cent. 



Moisture at 100° C, 29.01 



Magnesium oxide, 15.87 



Sulphuric acid, 30.35 



Insoluble matter, 6.29 



A.mmonite. 



[Sent on from Soutbampton, Mass.] 



Moisture at 100° C, . 



Ash, 



Nitrogen (171 cents jser pound). 

 Phosphoric acid (6 cents per pound), 

 Lisoluble matter, .... 



Per cent. 



6.17 



9.56 



12.20 



3.40 



0.22 



$47 50 



Valuation per 2,000 i^ounds. 



The matcritil was in a fine meclianical condition, and thus 

 in a favorable form for speedy disintegration. 



Saltpetre Waste. 



[Sent on from South Acton, Mass.] 



Per cent. 



Moisture at 100° C, 2.71 



Sodium oxide, 



Potassium oxide (4^ cents per pound), 



Calcium oxide, 



Sulphuric acid, 



Nitrogen in nitric acid (16 cents per pound), 

 Chlorine, 



45.92 

 6.11 

 0.71 

 0.84 

 0.80 



66.00 



Valuation per 2,000 poimds, 



$7 75 



