The Composition and Use of Fertilizers. "11 



Rules for Calculating from One Compound into Other Com- 

 pounds. 



(a) Compounds Containing Nitrogen. 



(1) To change ammonia into an equivalent amount of nitrogen, 

 multiply the amount of ammonia by 0.82. 



(2) To change nitrogen into an equivalent amount of ammonia, 

 multiply the amount of nitrogen by 1.21. 



(3) To change nitrate of soda into an equivalent amount of am- 

 monia, divide the amount of nitrate of soda by 5 (or multiply by 

 0.20). 



(4) To change nitrate of soda into an equivalent amount of ni- 

 trogen, divide the amount of nitrate of soda by 6 (or multiply by 

 0.165). 



(5) To change nitrogen into an equivalent amount of nitrate of 

 soda, multiply the nitrogen by 6. 



(6) To change sulphate of ammonia into an equivalent amount 

 of ammonia, divide the amount of pure sulphate of ammonia 

 by 4. 



(7) To change ammonia into an equivalent amount of sulphate 

 of ammonia, multiply the amount of ammonia by 4. 



(8) To change nitrate of potash into an equivalent amount of 

 nitrogen, divide the amount of nitrate of potash by 7.2. 



(b) Compounds Containing Potash. 



(9) To change muriate of potash into an equivalent amount of 

 actual potash, multiply the amount of muriate by 0.63. 



(10) To change actual potash into an equivalent amount of 

 muriate of potash, multiply the amount of actual potash by 1.6. 



(11) To change sulphate of potash into an equivalent amount 

 of actual potash, multiply the amount of sulphate of potash by 0.54. 



(12) To change actual potash into an equivalent amount of sul- 

 phate of potash, multiply the amount of actual potash by 1.85. 



(13) To change nitrate of potash into an equivalent amount of 

 actual potash, multiply the amount of nitrate of potash by 0.46. 



(14) To change actual potash into an equivalent amount of 

 nitrate of polasli, multiply the amount of actual potash by 2.15. 



(c) Compounds Containing Phosphoric Acid,. 



(15) To change bone phosphate into an equivalent amount of 

 'phosphoric acid, multiply by 0.46. 



(16) To change plwsphoric acid into an equivalent amount of 

 bone phosphate, multiply by 2.2. 



