EXHAUSTION OF SOILS. 



323 



inorganic substances should exist in the soil, but that they 

 be also found in a form adapted to the wants of the grow- 

 ing crop. 



ANALYSIS OF THE ASH OF THE HOP, showing the elements 

 it removes from the soil. 



In 100 parts there are of 



Vine & Blossom. Blossom. 



Silica 13.24 21.05 



Chloride of Sodium. . . 7.73 

 Potassium. 3.77 



S-da 0.13 



Potash 21.49 25.18 



Lime... ..34.79 15.98 



4.09 



Sulphuric Acid 4.63 



Phosphoric " ...... 6.34 



Phosphate of Iron 3.79 



Chloride of Potassium. 

 Alumina 



Blossom. 

 5.77 

 5.41 

 9.08 

 7.45 

 1.67 



a trace 



