224 AGRICULTURE. 



Constituents of Wheat and Potatoes. 



One pound of good wheat contains : 



oz. drs. 

 Bran ...... 30 



Starch 10 



Gluten 06 



Sugar 02 



Loss . 2 



16 ounces. 



Potatoes contain Water . . . 72*6 



Starch . . . 15-0 



Fibrous matter 7*0 



Albumen . . 1*4 



Mucilage . . 4-0 



100 parts. 



Potatoes differ essentially from wheat in contain- 

 ing no gluten. 



Rice. 



If rice be used soon after it is gathered, (for in- 

 stance within one or two months,) it is very un- 

 wholesome food. 



It has been remarked, that the heat produced by 

 rice, when heaped in large piles, will not allow in- 

 sects to live in the inside of the heap, consequently 

 the great wastage takes place at the outside surface. 

 Keeping rice, therefore, for any length of time, either 

 in small piles or in bags, is ruinous. 



Cassada. 



The cassada flour (termed in the Brazils farinha 

 de pao) is left untouched by every description of in- 

 sect, although in that extensive country it is the 

 principal food of man. 



