410 



Inland Water Culture 



Fig. 244. A pond at Lake Forest, 111., containing islands covered bybutton- 



For effects of grazing, corn- 



making it over to cultural uses without at the same time 

 providing reservations where the wild species may be 

 preserved for future generations. Each of these wild 

 species is the end product of the evolution of the ages. 

 When once lost it is gone forever: it can never be 

 restored. We are not wise enough, nor farsighted 

 enough to know whether the qualities lost with it would 

 ever be of use to our posterity. We are now only at 

 the beginning of knowledge of our plant and animal 

 resources. 



But quite apart from any possible economic values 

 that these creatures of the wild may possess, they have 

 other values for us that we shotild not ignore. Ere 



