176 Fertilizers 



that the nitrogen is all in the organic form, that only 

 a minimum percentage of the phosphoric acid is available, 

 though not soluble, and that a high content of chlorin 

 accompanies the potash, it is a low-grade product, in so 

 far as the form of the constituents is concerned. The 

 following statements of analyses of two brands, showing 

 the same total content of constituents, illustrate this 

 point : 



ANALYSIS No. 1 



Nitrogen, as nitrate 1 % 



Nitrogen, as ammonia 1% 



Nitrogen, as organic matter ... 1 % 



Total 3% 



Phosphoric acid, soluble .... 8% 

 Phosphoric acid, reverted . . . . 1% 

 Phosphoric acid, insoluble .... 1 % 



Total available 9% 



Potash 5% 



Chlorin 0.50% 



ANALYSIS No. 2 



Nitrogen, as nitrate 



Nitrogen, as ammonia 



Nitrogen, as organic matter ... 3% 



Total 3% 



Phosphoric acid, soluble .... 

 Phosphoric acid, reverted .... 2% 

 Phosphoric acid, insoluble . ... 8% 



Total available 2% 



Potash 5% 



Chlorin 10% 



A study of these two statements of analyses shows 

 that the total contents of the constituents are identical, 

 3, 10 and 5, respectively, in each case. That is, so 

 far as the total amounts are concerned, one brand fur- 

 nishes as much as the other, and from that standpoint 



