THE POWER OF SUNLIGHT 97 



number of leaves pointing towards the west, where soon 

 the sun will go down. But if we pay them another visit 

 next morning, not too early, when the Sun has been 

 some hours up, a change will have taken place. Many 

 if not most of the tube-like leaves will have probably 

 managed to turn over more or less towards the east, 



where the Sun arose. Generally there are a few weakly 

 or sickly ones, not able to do this. 



For plants, like men, are by no means always in good 

 health. They suffer from weakness, and from various 

 diseases, partly due to bad air or bad water or not 

 enough food, just as with ourselves. 



The same apparent love of sunshine is shown by other 

 kinds also. Some time ago I came across a Viola-plant 



