70 FARM ARITHMETIC. 



of which produces 25 bushels, and that finally available 

 for food when manufactured into flour? 



Important truth. While the manufacture of cereals 

 may increase their palatability, it is also true that the 

 process removes much of the mineral salts which are 

 essential to the full development of teeth, bone, and tissue. 



Digestible Mineral Nutrients. 



Average Per cent, or pounds in 100 



Beef, 0.6 



Pork, - 0.6 



Veal, 0.7 



Mutton, 0.5 



Poultry, 0.5 



Milk, 0.5 



Butter, 2.3 



Eggs, 0.7 



Flour, 0.4 



Breads, 0.8 



Vegetables, 0.6 



Legumes beans, peas, etc., 2.6 



Fruits, 0.3 



163. How many pounds of digestible mineral salts in 

 100 pounds of each of these foods ? 



164. How many times better are the legumes as min- 

 eral producers than beef ? Than fruit ? Than flour ? 



165. How many pounds of beef are required to fur- 

 nish the body with as much mineral salts as would be 

 supplied by a pound of beans ? 



166. How much flour will be required to do the same ? 



167. How many pounds of bread will you have to eat 

 to secure the quantity of mineral salts a pound of 

 beans would furnish? 



168. How much bread and milk when used in the pro- 

 portion of 1 to 2 will be required to equal a pound of 

 beans or peas? 



