692 



ANNUAL REPORT OF THE 



OfiE. Doc. 



A comx)arison of the average composition of all samples of com- 

 plete fertilizers for which guaranties are recorded with the average 

 of the corresponding guaranties, for several seasons past including 

 those of this season, follows: 



Average Composition and Guaranty Compared 



a 



C8 



a 



a 



< 



Phosphoric acid: 



Total 



Available, .-. 



Potash, - 



Nitrogen _.. 



Spring, 1906 



Phosphoric acid: 



Total 



Available, 



Potash, 



Nitrogen, „- 



Fall, 1906 



Phosphoric acid: 



Total, 



Available, ... 



Potash 



Nitrogen, 



Spring, 1907 



Phosphoric acid: 



Total, 



Available, .. 



Potash - 



Nitrogen, 



Fall, 1907 



Phosphoric acid: 



Total .- 



Available, -. 



Potash, 



Nitrogen 



Spring, 1908 



Phosphoric acid: 



Total, 



Available 



Potash, — 



Nitrogen, 



Pall, 1908 



Phosphoric acid: 



Total 



Available, .. 



Potash, 



Nitrogen 



Spring, 1909 



Phosphoric acid: 



Total, 



Available, ..... 



Potash, 



Nitrogen, 



Fall, 1909 



