13 



Nitrogen compounds 95 



Potash compounds 45 



Phosphoric acid compounds 47 



Lime compounds 40 



747 

 The following table of trade values was adopted at a 

 Trade Values meeting of representatives of the Experiment Stations 

 of Fertilizing of New England, New York and New Jersey, held 

 Ingredients, during the first week of March, 1913; this schedule has 

 served as a basis for valuing the fertilizers and fer- 

 tilizing materials here reported. 



These values represent the average cost per pound at retail for 

 the six months preceding March 1st, of nitrogen, potash and phos- 

 phoric acid as furnished by high grade chemicals and standard un- 

 mixed fertilizing material in large markets in New York and New 

 England. The values represent the average wholesale quotations 

 of chemicals and raw products as published in the trade journals from 

 Sept. 1, 1912 to March 1, 1913, plus about 20 per cent. 



Cents per pound. 



Nitrogen. 1912. 1913. 



In ammonia salts 16.5 18.5 



In nitrates 16.5 18.5 



Organic nitrogen in dry and fine ground fish, 



blood and meat 22 20 



Organic nitrogen in fine* bone, tankage and 



mixed fertilizers. 19 19 



Organic nitrogen in coarse* bone and tankage . 15 15 



Organic nitrogen in cottonseed meal, castor 



pomace, linseed meal, etc 20 20 



Phosphoric Acid. 



Soluble in water... 4.5 4.5 



Soluble in neutral ammonium citrate solution 



(reverted phosphoric acid)** 4 4 



In fine* ground bone and tankage 4 4 



In coarse* bone, tankage and ashes 3.5 3.5 



In cottonseed meal, castor pomace and linseed 



meal. 4 4 



Insoluble (in neutral ammonium citrate solution) 



in mixed fertilizers 2 2 



*Fine bone and tankage are separated from coarse bone and tankage by means of a sieve 

 having circular openings 1-50 of an inch in diameter. Valuations of bone and tankage are based 

 upon degree of fineness as well as upon composition. 



**Dissolved by a neutral solution of ammonium citrate, sp. gr. 1.09, in accordance with 

 method adopted by the Association of Official Agricultural Chemists. 



