PRINCIPLES OF MANURING. 



57 



Valuable Ingredients. 



Nitrogen 



Sulublo Phosphoric Acid.. 

 Insoluble Pho.sphorio Acid 



Average Cost per Pound, 



In ferlilizovs sold be- In fertilizers sold 

 fore establishment | under supervision of 

 of Station. Station. 



47.00 cents. 

 18.00 cents. 

 11.36 cents. 



23.00 cents. 



13.08 cents. 



5.51 cents. 



If, iustead of taking the fertilizers all together, we select a single 

 class, and one of the most important ones, the nitrogenous (ammon- 

 iated) phosphates, the comparison will stand as follows : 



Valuable Ingredients. 



Nitrogen 



Soluble Phosphoric Acid.. 

 Insoluble Phosphoric Acid 



Average Cost per Pound. 



In fertilizers sold be- 

 fore establishment 

 of Station. 



In fertilizers sold 



under supervision of 



Station. 



59.4 cents. 



19.5 cents. 

 21.1 cents. 



24.9 cents. 



15.1 cents. 



5.G cents. 



In brief, the average actual cost of the fertilizers sold under the 

 supervision of the Station is less than half that of those sold before 

 the Station was established." 



The above shows how sadly the farmers of Connecticut were being 

 defrauded b^' the dealers in commercial manures. At that time a 

 similar state of affairs probably existed in the fertilizer trade in 

 Maine, and though the work of the Connecticut station has prob- 

 ably had an indirect effect in causing a better quality' of fertilizers 

 to be sold in our own State, yet there is no doubt but that a similar 

 station in Maine would effect a great saving to its farmers. 



Just how valuations are made by experiment stations, and what 

 are the advantages derived from them, I can best show in part, by 

 some extracts from the Connecticut Experiment Station report for 

 1879.* 



I insert first a list of prices which are as near as possible to those 

 ruling with standard articles sold at fair prices. 



"The average trade- values or cost in market, per pound, of the 

 ordinarily occurring forms of nitrogen, phosphoric acid and potash, 

 as recently found in the Connecticut and New York markets, and 

 employed by the station during 1879 and which it is proposed to use 

 in 1880, are as follows : 



*By Dr. S. W. Johnson. 



