2 MAINE STATE COLLEGE 



simLiar in composition to the one taken to the station is left in 

 the hands of the agent selling the goods, thus giving the manu- 

 facturers an opportunity, by procuring an analysis of this sample, 

 to check the analytical work of the Station. 



The Trade Values or Fertilizers for 1890. 



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



those "agreed upon by the experiment stations of Massachusetts, 



New Jersey, and Connecticut for use in their respective states 



during 1891. The 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, Ammonite, 



Dried Blood, Dry Ground Fish, 



Muriate of Potash, Bone or Tankage, 



Sulphate of Potash. Ground So. Carolina Rock, 



Plain Superphosphates. 



Cts. 

 per lb. 



Nitrogen in ammonia salts 1S£ 



nitrates 14£ 



Organic nitrogen in dry and fine ground fish, meat and blood lf>£ 



in cotton seed meal and castor pomace 15 



in fine bone and tankage In 



in fine medium bone and tankage 12 



in medium bone and tankage 9£ 



in coarser bone and tankage 7k 



in hair, horn shavings and coarse fish scrap 7 



Phosphoric acid, soluble in water 8 



in ammonium citrate 1h 



in dry ground fish, fine bone and tankage 7 



in fine-medium bone and tankage n£ 



in medium bone and tankage 4<| 



in coarser bone and tankage 3 



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



Chlorides) 5£ 



as muriate 4<fe 



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

 months preceeding March the respective ingredients could be 

 bought at retail for cash in our large markets, 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 takes 

 for use by this Station. 



