WEEDS OF AGRICULTURE. 355 



ImiTOwino-, or by shallow ploughino- and harrowing. By 

 these means the slugs and their eggs are destroyed, as well 

 as the food which would have supported them until the 

 wheat plants were fit for their ravages. 



Facts such as these, on a subject of so much practical 

 imjjortance as this, are highly pleasing, for they afford proofs 

 at once clear and satisfactory, and beyond the reach of 

 doubt. 



2 A 2 



