SCIENTIFIC AGRICULTURE. 



221 



ASH OF GRASS AND CLOVER Continued. 



Lime, 



Magnesia, 



Alumina, 



Oxide of iron, 



Oxide of manganese, 



Silica, 



Sulphuric acid, 



Phosphoric acid, 



Chlorine, 



7.34 

 0.90 

 0.31 



27.72 

 3.53 

 0.25 

 0.06 



27.80 

 3.33 

 0.14 



3.61 

 4.47 

 6.57 

 3.62 



52.86 74.78 



The practical inferences from these tables are, first the 

 kind of soil in which each will grow best, second the kind 

 of inorganic matter necessaiy to be supplied artificially, 

 third their nutrient properties, and the kind of stock they 

 are best adapted to nourish. ;v 



The following table from " Liebig's Agricultural Chemistry," 

 shows the relative proportions of potash, lime and silica in 

 several cultivated plants. 



SILICA PLANTS. 



Oat straw and seeds, 

 Wheat straw, 

 Barley straw and seeds, 

 Rye straw, 

 Good hay, 



Tobacco, 

 Pea straw, 

 Potato tops, 

 Meadow Clover, 



Silica. 

 62.00 

 61.50 

 55.30 

 63.89 

 60.00 



8.30 



7.31 



63.40 



4.90 



