AGRICULTURAL EXPERIMENT STATION. 



of the above trade values. In order to simplify the method all 

 the nitrogen is valued as organic, and all the potash as the 

 sulphate. This will have the effect of causing a slightly higher 

 valuation of those brands containing nitrogen from nitrate of soda 

 or potash from the sulphate, but will not change the figures 

 sufficiently to affect their usefulness. 



Multiply 18 1-2 cents by the percentage of nitrogen and this 

 product by twenty ; 



Multiply 6 cents by the percentage of available phosphoric acid 

 and the jjroduct by twenty ; 



Multiply 2 cents by the percentage of insoluble phosphoric acid 

 and the p-'oduct by twenty ; 



Multiply 5 cents by the ptercentage of potash and this product by 

 twenty ; 



The sum of these four final products ivill be the commercial valua- 

 tion on the basis taken. 



The valuation will be useful only as a means of determining 

 whether one fertilizer has a selling price greater than another in 

 proportion to some standard of valuation. Such commercial 

 valuations do not necessarily measure the relative value for use on 

 a particular farm. 



The information to be found in the following tables is classified 

 as follows : 



Description of Manufacturer's Samples. 

 Analyses of Manufacturer's Samples. 

 Description of Station .Samples. 

 Analyses of Station Samples. 



Comparison of Guarantees, Manufacturer's Samples 

 and Station Samples. 



Manufacturers who have paid License Fees foe the 

 Year 1894.* 

 Hiram Blan chard, Eastport, Me., one brand manufactured at 

 Eastport, Me. 



Bradley Fertilizer Co., Boston, Mass., two brands, manu- 

 factured at North Weymouth, Mass. 



John S. Reese & Co., Baltimore, Md., one brand, manufac- 

 tured at Carteret, N. J. 



Table I. 



u 



II. 



u 



in. 



u 



IV. 



u 



V. 



* Since Bulletin No. 7 was publisheil. 



