610 BOARD OF AGRICULTURE. 



Saltpetre Waste from Gunpowder Works (7 Analyses) . 



[Jan. 



Highest. Lowest. 



Moisture at 100° C, 

 Potassium oxide, . 

 Sodium oxide, 

 Calcium oxide. 

 Magnesium oxide, 

 Nitrogen, 

 Sulphuric acid, 

 Chlorine, 



4.24 



30.94 



45.92 



.83' 



.28' 



3.30 



4.85" 



56.00 



.50 

 4.65 



22.08 

 .71' 

 .09' 

 .80 

 .84' 



37.66 



Sulphate of Ammonia (22 Analyses). 



Moisture at 100° C, 

 Nitrogen, 

 Sulphuric acid. 

 Insoluble matter, . 



2.40 

 22.23 

 70.70 



.13 

 19 70 

 57.68 



Ammonite. per cent. 



Moisture at 100° C, 5-88 



Phosphoric acid, 3.43 



Nitrogen, 11-33 



Insoluble matter, 1-38 



