458 ANNUAL REPORT OP THE Off. Doe. 



Average Composition and Guaranty Compared — Continued. 



a 



d 



at 

 S 



te 



o 

 it . 



(> a 



Spring, 1913. 

 Phosphoric acid: 



Total 



Available, 



Potash 



Nitrogen 



Fall, 1913. 

 Phosphoric acid: 



Total 



Available 



Potash 



Nitrogen, 



Spring, 1914. 

 Phosphoric acid: 



Total 



Available, 



Potash, 



Nitrogen, 



Fall, 1911. 

 Phosphoric acid: 



Total 



Available 



Potash 



Nitrogen 



8.92 

 7.37 

 5.17 

 1.62 



9.09 

 7.83 

 4.27 

 1.35 



8.71 

 7. S3 

 5.52 

 1.69 



9.25 

 8.00 

 2.99 

 1.27 



It is of interest to note how closely the series of valuations based 

 upon the wholesale price of raw materials in the principal markets 

 during the most important buying season and upon certain average 

 allowances for expenses and profits on the part of the mixer and 

 jobber, coincides with the retail prices later ascertained. A compari- 

 son for several seasons past is given below: 



Comparison of Selling Price and Valuation, 1910-1914. 



a 

 So 



a 



Ol HI 



Complete fertilizers: 



1910, Spring, 



Fall 



1911, Spring, 



Fall 



1912, Spring 



1913, Spring 



Fall, 



1914, Spring 



Fall 



Dissolved bone: 



1910, Spring, .... 

 Fall 



1911, Spring, .... 

 Fall 



1913, Spring 



1913, Spring 



Fall 



1914, Spring, 



Fall 



1.43 



.48 



.98 



.61 



—.40 



1.36 



2.44 



2.21 



1.81 



— .70 



— .10 

 3.49 



—3.37 

 2.82 

 3. OS 

 -.49 

 1.03 

 2.97 



