AGRICULTURAL TEXT-BOOK. 



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II. Southern corn (Shepherd,) 100 parts gave 0.95 parts ash, 

 composed : 



Silica, 



Potash, with trace of Soda, 



Phosphate of lime, 



Phosphate of magnesia, 



Phosphate of potash, 



Carbonate of lime, - 



Carbonate of magties a, 



Sulphate of lime and magnesia, - 



Silira, (mechanically present,) 



Alumina, 



L088, - 



38.45 



19.51 



17.17 



18.83 



254 



250 



2.16 



0.79 



1.70 



trace 



1.65 



100.00 



III. Corn, (United States.) (Fromberg.) 



Potash, 



Soda, - - 



Magnesia, - 



Lime, 



Phoaphoric acid, ... 



Sulphuric acid, ... 



Silica, ..... 



Peroxide of iron, - - 



99.08 



It will bo perceived from these analyses that Indian corn va- 

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