36 FERTILIZERS 



Here are two analyses of different total value 

 which will illustrate the foregoing : 



ANALYSIS I. 



Nitrogen in terms of ammonia, 5 % . 

 Equivalent in nitrogen (5X.825) 



4.13% or 82.60 pounds at 20c $16.52 



Phosphoric acid (from steamed bone) 



12% or 240 pounds at 5V 2 c 13.20 



Equivalent to bone phosphate 26% 

 Potash (actual, K 2 O) 



3% or 60 pounds at 6c 3.60 



Sulphate of potash, 5.9% 



Total value of ton $33.32 



Note. No account is taken of either the 26% of 

 bone phosphate or of the 5.9% sulphate of potash as 

 they are only repetitions of the 12% phosphoric acid 

 and the 3% actual potash respectively. 



ANALYSIS II. 



Nitrogen in terms of ammonia, 5^2%. 

 Equivalent to nitrogen (5%X.825) 



4.54% or 90.80 pounds at 20c '. $18.16 



Phosphoric acid (from raw bone) 



13% or 260 pounds at 2c 5.20 



Equal to bone phosphate, 31% . 

 Potash, (actual, K 2 O) 



4% or 80 pounds at 6c 4.80 



Sulphate of potash, 7.95%. 



Total value of ton $28.16 



Although Analysis II is higher in its percentage 

 of plant food, the form of the phosphoric acid is 

 against it and cheapens it so much that the total 

 value of the ton is considerably less. 



Either of these analyses might be offered to the 



