Dr. E. C. Miller, Professor 

 of Plant Physiology, Kansas 

 State Agricultural College, 

 Manhattan. Water relations of 

 plants; Plant chemistry. Dr. 

 Miller has also written the most 

 comprehensive book on plant 

 physiology by an American. 



Dr. L. Jost, Professor 

 of Plant Physiology, Uni- 

 versity of Heidelberg, 

 Germany. Dr. Jost has 

 had many students and is 

 the author of the most com- 

 prehensive modern German 

 work on plant physiology. 



