Feetilizees. 97 



Phosphoric acid in fine medium bone and tankage $.055 



Phosphoric acid in medium bone and tankage 045 



Phosphoric acid in coarser bone and tankage 03 



Phosphoric acid insohible in complete fertilizers 02 



Potash as high grade sulphate and in forms free from muriates 



or chlorides 055 



Potash as kainit • 045 



Potash as muriate 045 



Following is given the guaranteed analyses of a brand of fertilizer 

 sold in this State to which the foregoing prices will be applied to ascer- 

 tain the value of the plant food contained in this particular brand: 



GUAEANTKED ANALYSES. 



Ammonia .". 1 to 2 per cent 



Soluble phosphoric acid 8 to 10 per cent 



Reverted phosphoric acid 2 to 8 per cent 



Available phosphoric acid • 10 to 12 j)er cent 



Insoluble phosphoric acid 1 to 3 per cent 



Total phosphoric acid ' 1 1 to 15 per cent 



Sulphate of potash 2 to 4 per cent 



Of these constituents, the nitrogen contained in the ammonia, the 

 soluble, reverted and insoluble phosphoric acid, together with the 

 potash, constitute the valuable plant food. As these constituents in 

 analyses are given in per cent or by the hundred the number of pounds 

 of each constituent in a ton may be ascertained by multiplying the per 

 cent, by 20. 



Ammonia is {^ nitrogen. 



Sulphate of potash is f ^ actual potesh. 



The following is an application of the prices given to the foregoing 

 guaranteed analysis. The lowest per cent guaranteed is always taken 

 for computation: 

 Ammonia 1 per cent, x 20 x 14 divided by lY gives 16.47 lbs. 



of nitrogen in one ton; 16.47 multiplied by 16 cents gives. . $2 64 

 Soluble phosphoric acid 8 per cent, x 20 x 7^ cents per lb. 



gives 12 00 



Reverted phosphoric acid 2 per cent, x 20 x 7 cents per lb. 



gives 2 80 



Insoluble phosphoric acid 1 per cent, x 20 x 2 cents per lb. 



gives 40 



Sulphate of potash 2 per cent, x 20 x 47 divided by 87 and 



multiplied by 4-^ cents per lb, gives 97 



Total value per ton $18 81 



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