No. 6. 



DEPARTMENT OF AGRICULTURE. 



507 



assumption that the fertilizers are uniformly romponnded from hif^li 

 quality ingredients, such as are commonly employed in the manufac 

 ture of fertilizers of the several elas.ses. Consumers should care- 

 fully avoid the error of accepting such valuations as infallible; they 

 are not designed to be used for close comparisons of single bi-ands, 

 but only to indicate whether the price asked for a fertilizer is ab- 

 normal, assuming good quality for the ingredients used. From this 

 it is clear that, except as high freights iiuiy require, the selling price 

 of a brand should not far exceed the valuation; hut that a fertilizer 

 may he made of inferior materials and yet have a high valuation. 



The valuations used during 1914 have been modified for use during 

 1915 in accordance with the changes in wholesale prices of fertilizing 

 ingredients and to make the valuations more closely follow the sell- 

 ing price. 



The following comparative statement shows the valuations and 

 selling prices of the several classes of fertilizers during 1910 to 1914. 



Complete 



Roek-aiid-i otasb, 

 Dissolved bone, . 

 Ground bone, ... 

 Disserved rock, . 



Complete 



Rock-and-iiotasli, 

 Dissolved bone. 

 Ground bone. ... 

 Dissolved rock, . 



Complete 



Rock-and-pota.sh, 

 Dissolved bone, . 

 Ground bone, ... 

 Dissolved rock, . 



Complete, 



Rock-and-potash. 

 Dissolved bone, . 

 Ground bone, ... 

 Dissolved rock. 



Complete 



Rock-and-potash, 

 Dissolved bone. 

 Ground bone, . . . 

 Dissolved rock, . 



Complete , 



Rockand-potasli , 

 Dissolved bone, 

 Ground bone, . . . 

 Dissolved rock, . 



Fertilizers 



Spring, 1910 



Fall, 1910 



Spring, 1911. 



Fall, 1911 



Spring, 1912 



Fall, 1912 



