" " " fine medium bone and tankage, 12 



" " " medium bone and tankage, 9 



" " " coarse bone and tankage, 7 



" " "• hair, horn-shavings, coarse tish scraps, 7 



Phosphoric acid solul)le in water, G^ 



" " soluble in ammonium citrate, 6 



" " in fine bone and tankage, 6 



" " in fine medium bone and tankage, 5 



" "in medium bone and tankage, 4 



" " in coarse bone and tankage, 3 



" " in fine ground fish, cotton-seed meal, linseed 



meal, castor pomace and wood ashes, 5 



" '■ insoluble (in am. cit.)in mixed fertilizers, 2 



Potash as high-grade sulphate and in mixtures free from 



muriate, 5^ 

 " " muriate, 4^ 



The raanurial constituents contained in feedstuffs are valued as 

 follows : 

 Organic Nitrogen, 17| 



Phosphoric acid, 6 



Potash, 5^ 



The organic nitrogen in superphosphates, special manures and 

 mixed fertilizers of a high grade is usually valued at the highest 

 figures laid down in the trade values of fertilizing ingredients in raw 

 materials, namely, 17|^ cents per pound ; it being assumed that the 

 organic nitrogen is derived from the best sources, viz., animal 

 matter, as meat, blood, bones, or other equally good forms, and not 

 from leather, shoddy, hair, or any low-priced, inferior form of vege- 

 table matter, unless the contrary is ascertained. The insoluble 

 phosphoric acid is valued in this connection at two cents. 



The above trade values are the figures at which in the six months 

 preceding March, 1893, the respective ingredients could be bought 

 Sit retail for cash in our large markets, in the raw materials, which are 

 the regular source of supply. 



They also correspond to the average wholesale prices for the six 

 months ending March 1st, plus about 20 per cent, in case of goods 

 for which we have wholesale quotations. The valuations obtained 

 by use of the above figures will be found to agree fairly with the 

 retail price[at the large markets of standard raw materials, such aa : 



