yo MAINE AGRICULTURAL EXPERIMENT STATION. ig02. 



phates and similar articles, for which S20 to S45 per ton are paid, 

 depend for their trade value exclusively on the substances, nitro- 

 gen, phosphoric acid and potash, which are comparatively costly 

 and steady in price. The trade-value per pound of these ingre- 

 dients is reckoned from the current market prices of the standard 

 articles which furnish them to commerce. The consumer, in 

 estimating the reasonable price to pay for high-grade fertilizers, 

 should add to the trade-value of the above named ingredients a 

 suitable margin for the expenses of manufacture, etc.. and for 

 the convenience or other advantage incidental to their use. 



The trade values for 1902 have not yet been agreed upon, but 

 if any one wishes to calculate the valuation he can do so by using 

 the prices adopted for 1901 by the experiment stations of Con- 

 necticut,. [Massachusetts, Rhode Island and New Jersey. It 

 represents the retail prices at which these ingredients could then 

 be purchased in the various forms mentioned. On account of 

 the greater distance from the large markets, the prices for Maine 

 would probably be a little higher than those quoted. 



For many years this Station has not printed an estimate of 

 the commercial value of the different brands licensed in the State. 



Trade Values of Fertilizing Ingredients for 1901. 



Cents per lb. 



Nitrogen in ammonia salts 16^ 



nitrates 14 



Organic nitrogen in dry and fine ground fish, meat and 



blood and in mixed fertilizers. ... 16 



in fine bone and tankage 16 



in coarser bone and tankage 12 



Phosphoric acid, water-soluble 5 



citrate-soluble A^/z 



of dry, fine ground fish, bone and 



tankage 4 



of coarser bone and tankage 3 



of fine ground fish, cottonseed meal. 



castor pomace and wood ashes ... 4 



of mixed fertilizers, insoluble in 



ammonium citrate 2 



Potash as high-grade sulphate and in forms free from 



muriate Cor chlorides) 5 



as muriate -~i 



