$6 Conservation Reader 



We conclude, then, that the soil forms the real wealth of 

 the world. All our comforts and luxuries come in the first 

 place, as we have seen, from the soil. The more crowded 

 people become upon the earth, and the greater the number 

 that engage in manufacturing and trade, the more impor- 

 tant becomes the care and cultivation of the soil. If we do 

 not take the best of care of the soil, there may come a time 

 when there will not be food enough for us all. 



