278 CAMPBELL'S SOIL CULTURE MANUAL 



regions of the Mississippi valley and along the coasts of 

 lakes and oceans where there is abundance of water, but 

 where distribution is not always what it should be. Farm- 

 ers in these regions are making use of the principles enun- 

 ciated to enable them the better to increase their yields 

 and to make doubly sure of good crops. 



Within the past year we have been visited by men from 

 South Africa, with a view to having our system tried there. 

 Letters and inquiries have come from Porto Rico, Aus- 

 tralia, Mexico, Canada and elsewhere, indicating that there 

 is demand for knowledge concerning the system all over 

 the world. 



The soil culture empire has no limits. The system is 

 useful on every farm. It reaches over "oceans and moun- 

 tains. Over vast areas the principles are triumphing over 

 the perverseness of nature. And some day this soil culture 

 empire will be the garden spot of the earth, 



