Dry 

 Matter. 



Grammes. 

 130 



Nitrogen 

 andPaOs. 



Grammes. 



3 



3 6 9 12 IS 18 21 24 27 30 33 36 days. 



Fig. 15.— Diagram showing the Migkation of Plant Constituents 

 INTO THE Grain of Wheat duking the last Five Weeks before 

 Harvest. 



\Face page 64. 



