32 



TRANSLOCATION OF PLANT FOOD IN WHEAT SEEDLINGS. 



VI. Plants grown in 150 parts per million phosphoric add solution. (Plumule+ 



rootlet.) 



GROWN IN DISTILLED WATER (CONTROL). 



VII. Plants grown in 150 parts per million nitrate solution. (Plumule-f- rootlet.) 



GROWN IN DISTILLED WATER (CONTROL). 



o 



