4 MAINE STATE COLLEGE 



The Tuade Values of Fertilizers eoii 18U0. 



The trade values given below which are used by this Station are 

 those "agreed upon by the experiment stations of Massaclnisctts, 

 New Jersey, Rhode Island and Connecticut for use in their 

 respective states during 18!)2. Tlie valuations obtained by use of 

 the following figures will be found to agree fairly with the average 

 retail ■price at the large markets of standard raw materials such 

 as :" 



Sulphate of Ammonia, Azotin, 



Nitrate of Soda, Ainmoiiite, 



Dried Blood, Dry Ground Fish, 



Miniate of Potash, Bone or Tankage, 



Sulphate of Potasli, Ground So. Carolina Kock, 



Plain Superphosphates. 



Cts. 

 per lb. 



Nitrogen in ammonia salts 17i 



nitrates 15 



Organic nitrogen in dry and fine ground fish, meat and blood 16 



in cotton seed meal and castor pomace 1.5 



in fine bone and tankage 15 



hi fine medium bone and tankage 12 



in medium bone and tankage 9i 



in coarser bone and tankage 7i 



in hair, horn shavings and coarse fish scrap 7 



Phosphoric acid, soluble in water Ih 



^ in ammonium citrate 7 



in dry ground fish, fine bone and tankage 7 



in fine-medium bone and tankage 5i 



in medium bone and tankage 44 



in coarser bone and tankage 3 



Potash as high-grade Sulphate and in forms free from Muriate or 



Chlorides 5i 



as muriate Ah, 



"These trade values are the average prices at which in the six 

 months preceding March the respective ingredients could be 

 bought at retail for cash in our large mai'kets, Boston, New York 

 and Philadelphia, 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 sale of "standard raw materials" in Maine is too small to 

 allow an estimation of values upon the basis of local market 

 prices, so the figures as agreed upon in other New England States, 

 where the subject is very ably and thoroughly studied, are taken 

 for use by this Station. 



The Valuation of Superphosphates and Mixed Goods. 



These trade values are applied to the valuation of Superphos- 

 phates and all mixed goods, as follows : 



It is assumed that the organic nitrogen of these goodhass for 

 its source such materials as dried blood, ground fish, or nitroge- 

 nous substances of equally good quality, unless a special examina- 

 tion of some particular brand shows that inferior material like 



