A QUARTER-CENTURY OF PLANT PHYSIOLOGY 15 



of a wild species, an exceedingly valuable cultivated crop hither- 

 to miknown in the world. Wliile doing this he has been in the 

 employ of a commercial corporation. 



There seems to be no doubt that the future of plant physiol- 

 ogy and plant ecology lies with agriculture and forestry. It is 

 these arts that are to supply the elaborate equipment needed 

 for truly scientific studies of the relations between controlling 

 conditions and plant processes. Just as theoretical physics 

 draws upon engineering for its financial support, so must theoreti- 

 cal plant physiology depend upon the arts of plant production. 

 Thus, through its youngest branches, physiology and ecology, 

 the scientia amabilis is becoming also a scientia utilis, but with 

 this great change it will still remain as truly a scientia and as 

 truly amabilis as it has ever been in the past. 



