13 



The following schedule of trade Values of fertilizer 

 Trade Values ingredients was adopted at a meeting of station 

 of Fertilizer directors and chemists of the New England and 

 Ingredients. New Jersey experiment stations, which was held 



in March 1909. These values represent the aver- 

 age cash pound cost, at retail, of nitrogen, phosphoric acid and pot- 

 ash in their various forms furnished by chemicals and unmixed 

 raw materials on sale in the large markets in New England and 

 New York during the six months preceding March 1st, 1909. 

 As may be seen from the table which gives in comparison the 

 trade values for 1908, the values for nitrogen and phosphoric 

 acid are somewhat lower than for the previous year, while the 

 various forms of potash remain unchanged. 



TRADE VALUES OF FERTILIZING INGREDIENTS IN RAW MATERIALS 

 AND CHEMICALS FOR 1909 AND 1908, 



Cents per pound. 



Nitrogen. 1909 1908 



In ammonia salts 17 17^ 



In nitrates 16^ l^K 



Organic nitrogen in dry and fine ground fish, meat, 



blood and in high grade mixed fertilizers 19 20^ 



Organic nitrogen in fine* bone and tankage 19 20 K 



Organic nitrogen in coarse* bone and tankage 1-4 15 



Phosphoric Acid. 



Soluble in water 4 5 



Soluble in neutral ammoniuin citrate solution (re- 

 verted phosphoric acid) 3^ 4^^ 



In fine* ground bone and tankage 3J-^ 4 



In coarse* bone and tankage 3 3 



In cottonseed meal, linseed meal, castor pomace 



and ashes 3 4 



Insoluble (in neutral ammonium citrate solution) 



in mixed fertilizers 2 2 



Potash. 



As sulphate, free from chlorides 5 5 



As muriate (chloride) 4^ ^/i 



As carbonate 8 8 



♦Fine and medium bone and tankage are separated by a sieve having circular openings 

 V50 of an inch in diameter. Valuations of these m.aterials are based upon degree of fine- 

 ness as well as upon composition. 



