166 MINERAL SALTS ABSORPTION IN PLANTS 



transport in the belief that these processes could be explained largely 

 without reference to other plant activities. It is now clear that to 

 explain what seems to be a specific aspect of plant physiology one 

 has almost to understand life itself. Thus the mechanism of an 

 apparently simple function such as salt absorption proves to be 

 immensely complex, and may tax the ultimate limits of our under- 

 standing. 



O Lord, how wonderful are Thy works, 

 and Thy thoughts are very deep. 



