New York Agricultural Experiment Station. 



21 



should be amended to give the necessary authority for the pubhca- 

 tion of the results of the examination of samples of fertilizers. 



For 1903, 83 manufacturers licensed 644 brands of fertilizers. 

 The Station's collecting agents visited 203 towns between March 24 

 and August 28, obtaining 948 samples of fertilizers, representing 

 540 brands. 



The following tabulated statement shows the average composition 

 of the complete fertilizers collected during the year, together with 

 a comparison of the guaranteed composition and that found by 

 analysis : 



Average Composition of Complete Fertilizers Collected. 



Nitrogen 



Available phosphoric acid. 

 Insoluble phosphoric acid. 



Potash 



Water-soluble nitrogen . . . 



Water-soluble phosphoric 



acid 



Average 

 per ct. found 



above 

 guarantee. 



0.07 

 0.83 



0.23 



Commercial Valuation and Selling Price of Complete Fertilizers, 



In the table below we present figures showing the average cost 

 to the purchaser of one pound of plant- food in different forms in 

 mixed fertilizers. 



