58 CHEMICAL FERTILIZERS; AND LIME 



DRIED BLOOD 

 Moisture 15.02 Nitrogen 8.24 



DRY GROUND FISH 



Moisture at 100 C 8.34 



Ash 37.76 



Total phosphoric acid 8.23 



Soluble phosphoric acid 0.10 



Reverted phosphoric acid 3.81 



Insoluble phosphoric acid 4.32 



Nitrogen 6.81 



Insoluble matter 0.82 



SULFATE OF AMMONIA 



This article, now manufactured on a large scale as a by-product of gas-works, 

 usually contains over 20 per cent of nitrogen, the equivalent of from 94 to 97 

 per cent of sulfate of ammonia. The rest is chiefly moisture. 

 Nitrogen 20.02 Equivalent ammonia .... 24.30 



SULFATE OF POTASH. (Two samples) 



The double sulfate of potash and magnesia is usually sold as "sulfate of 

 potash." 



i. ii. 



Actual potash 27.76 51.28 



Equivalent sulfate of potash 51.3 94.80 



SULFATE OF MAGNESIA 



Moisture at 100 C 29.01 Sulfuric acid 30.35 



Magnesium oxide 15.87 Insoluble matter 6.29 



NITRATE OF SODA 



Nitrate of soda is mined in Chile and purified there before shipment. It 

 usually contains about 16 per cent of nitrogen, equivalent to 97 per cent of pure 

 nitrate of soda. It contains, besides, a little salt and some moisture. 



Moisture 0.35 Sulfate of soda 0.21 



Salt (sodium chloride) .... 0.23 Pure nitrate of soda .... 99.21 



MURIATE OF POTASH. (Two samples) 



Commercial muriate of potash consists of about 80 per cent of muriate of 

 potash (potassium chloride) ; 15 per cent or more of common salt (sodium 

 chloride), and 4 per cent or more of water. 



i ii 



Actual potash 50.0 52.82 



Equivalent muriate 79.2 83.70 



GERMAN POTASH SALTS Average of 11 Analyses 



Moisture at 100 C 13.14 Magnesium oxide 9.25 



Potassium oxide 21.63 Sulfuric acid 10.85 



Sodium oxide 13.76 Chlorine .... ... 35.63 



Calcium oxide 0.85 Insoluble matter 2.08 



