706 ANNUAL REPORT OP THE Off. Doc. 



Composition of Nou-acidulated Fertilizer Ingredients (Per Cent). 



Sulfate of ammonia, 4 20.53 



Nitrate of soda 10 15.62 



Dried blood 4 11.9S 



Ground bone I 4'? 1 3.07 



Tankage ' 9 5.14 



Ground fish i 19 7.26 



Cotton seed meal, ' 46 7.27 



Castor pomace ' 6 5.31 



Sulfate of potash, high grade C 



Muriate of potash 16 



Kainit, 6 



Double sulfate of potash and magnesia 5 



Composition of Acidulated Fertilizer Ingredients (Per Cent.). 



u 



o 

 .a 

 a 



<n 

 o 

 fi 



B-6 

 Q-3 



Dissolved bone black, ... 



•Dissolved bone, 



Dissolved rock phosphate. 



.66 

 8.02 

 1.91 



•Also contains 3.19 per cent, of nitrogen. 



Considering only those materials sold by the ton or hundred- 

 weight, rather than by the unit, the bone and fish show less of the 

 valuable constituents, the tankage more of phosphoric acid and less 

 of nitrogen than usual, while the kainit exhibits a little higher 

 average than in years preceding. This survey exhibits no consider- 

 able modification in the character of the raw materials used for fer- 

 tilizer manufacture. 



Cost per Pound of Fertilizer Constituents. 



From the foregoing data showing the cost per ton, hundred- 

 weight, or other unit of measure, of the several raw materials, and 

 the quantities of valuable constituents the average materials now on 

 th« market contain, the wholesale cost per pound of the valuable con- 



