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

 bone phosphate or of the 5 % 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, 5V2%. 

 Equivalent to nitrogen (5%X.825) 



4.54X20=90.80 pounds at 16c $14.53 



Phosphoric acid (from raw bone) 



13X20=260 pounds at 2c $5.20 



Equal to bone phosphate, 31% 

 Potash, (actual, K 2 O) 



4X20=80 pounds at 6c $4.80 



Sulphate of potash, 7.95%. 



Total value of ton $24.53 



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 

 grower for, say, $35 per ton and No. 1 would be the 

 best buy for the grower, and No. 2 the best sale for 

 the agent or manufacturer. 



It is quite possible for the nitrogen to be in cheap 

 form also and worth considerably less than 16c. per 

 pound. The nitrogen from raw bone is worth less 

 than that from blood, or bird guano, or tankage. 



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