46 The Feeding of Animals 



Per cent in the dry matter 



Phos- Sul- 



In the first place, the straws contain more mineral 

 matter than the grains. It is very evident also that in 

 the straws there is much more potash, lime and silica 

 than in the grains, while phosphoric acid in most cases 

 exists in larger proportions in the latter. 



The roots and leaves of beets and turnips present a 

 striking difference in mineral content: 



Per cent in the dry matter 



Leaves 11.6 2.73 1.10 3.83 .46 .18 .85 1.09 .45 1.18 



There appears to be a tendency for mineral com- 

 pounds to accumulate in the leaves of plants, and leafy 

 plants are, as a rule, those which appropriate these 

 most freely. 



