AGRICULTURAL TEXT-BOOK. 



115 



The amount of inorganic matter taken from an acre of the 

 soil by the small white Flint com is : ( Gould.) 



Silicic acid, 



Phosphates of iron, lime, and magnesia, 



Potash, 



Soda, 



Lime, ... 



Magnesia, - 



Chlorine, 



Sulphuric acid, 



210.14 Ibs. 



9458 &quot; 



6471 



63.00 



15.69 



9.69 



19.62 &quot; 



30.34 &quot; 



881 .85 Ibs. 



Of organic matter there is taken from one acre : 



Sugar and extract, - 



Starch, (in kernel only,) - 



Rosin, (in cob only,) - - 



Fibre, 



Albumen, - 



Casein, - - 



Zein, (in kernel only,) 



Dextrine and gum, .... 



Oil, (in kernel only,) ... 



Chlorophyl and wax, 



Glutinous matter, - - 420 &quot; 



22,546 Ibs. 



Of this, 8,008 Ibs. are taken off by the kernels, leaving 

 14,538 Ibs. for the rest of the plant. Of the inorganic matter 

 99 Ibs. are contained in the kernels, leaving 782 Ibs. for the stalks, 

 leaves, &c. 



2,892 Ibs. 



5,139 



15 



11,526 &quot; 



817 



396 &quot; 



143 



1027&quot; 



312 



