SWEET CLOVER 125 
trial. Do not worry about the plant becoming a noxious 
weed on the farm. It will only grow on the poor lands 
and these lands need it. 
In the building up of our worn soils and in keeping up 
the fertility of our fairly rich soils, we must bring to 
our use those plants that will gather the nitrogen and 
furnish the most organic matter and the best soil-cover- 
ing material, and sweet clover seems to be one of this 
. ind of plants. 
The author has written the chapter on sweet clover for 
this edition of his book to make more emphatic to his 
readers the fact, that, the chief lack of worn-out soils 
is nitrogen and organic matter, and that whenever we 
make use of those plants, upon our worn-out soils that 
gather nitrogen from the air and produce great quantt- 
ties of organic matter, that we are then getting on the 
only road that leads us to soil restoration. 
