PROFITS OF MANUFACTURERS. 149 



This superphosphate of lime would show, by 

 analysis, the following percentage of the substan 

 ces named below : 



Nitrogen in organic matter 2-85 



Soluble Phosporic Acid 16-20 



Equal Superphosphate of Lime 26 '70 



Equal to Bone-phosphate rendered sol.. .35*37 



The reader will observe that a superphosphate 

 of the above quality can be manufactured at a 

 cost of $37.41 per ton, and is worth $51.05 to 

 the former and if sold at $50, allows a profit 

 of 33 J per cent, on its cost quite enough for 

 any honest business. He will also observe that 

 12 i cents per Ib. for soluble phosphoric acid (the 

 value we have assumed in our calculations), is a 

 fair valuation, inasmuch as that assumed value 

 allows a large profit. We shall show hereafter 

 that 15 cents per Ib. is a fair valuation for 

 nitrogen in organic matter ; and further, he will 

 observe by turning to the analyses of leading 

 manures given in Chap. VII., and comparing 

 the percentage of valuable ingredients in them, 

 with that of the phosphate above described, that 

 one ton of the latter is really worth two tons of 

 any of them, which are sold at from $50 to $55 

 per ton. How great then are the profits of 

 manufacturers, and the imposition upon pur- 

 chasers ! 



