New York Agricultural Experiment Station. 



33 



INTRODUCTION. 



Number and Kinds of Fertilizers Collected. 



During the spring of 1897^ we collected 735 samples of com- 

 mercial fertilizers, representing 500 different brands. The tabu- 

 lated statement below indicates the different classes included in 

 the collection. 



Classes of Fertilizers Collected. 



From these figures it can be seen that 80 per cent of the com- 

 mercial fertilizers offered for sale during the spring consisted of 

 complete fertilizers. The remaining 20 per cent was distributed 

 in nearly equal proportions between acid phosphates, bone and 

 mixtures containing acid phosphate and potash. 



Composition of Fertilizers Collected. 



The tabulated statement below shows the average composition, 

 of the complete fertilizers collected during the spring, together 

 with a comparison of the guaranteed composition and that found 

 by analysis. 



Average Composition of Complete Fertilizers Collected. 



