MINERALS IN NUTRITION 11 



its distribution is similar, but the amounts are more varialile. In many in- 

 stances, 2 grams of material yielded only a bare trace of manganese. 



The amount of phosphorus in foods, either natural or processed, is 

 usually much greater than that of any of the other minerals determined, 

 ranging from 200 to 10,000 parts per million. Most of the phosphorus 

 occurs in organic combination with protein and ether-soluble bodies, and 

 the amount appears to increase in order from the major fruits through 

 the minor fruits, root vegetables, cereals, roughage, leaf and stem veg- 

 etables, and cattle feeds. 



