O. Biddulph 



263 



x x Dry matter 



* Iron 



*" '"< 



£ 3 4 5 6 



Days of Germination 



Figure i. The dry matter and iron content of bean seedlings during the 

 first seven days of germination expressed as percentage of material in un- 

 germinated seeds (less seedcoat). Graphs for plants kept in total darkness 

 are included for the fourth to the seventh day only. 



TRANSLOCATION OF MINERALS IN THE XYLEM 



Translocation in the mature plant is a complex phenomenon. It is 

 dependent on the initial absorption processes carried on by the epi- 

 dermal cells of the root. From this point there begins a cell-to-cell 



