202 V/eeds, 



5. Harrow small grain in the early 

 spring. Harrow the grain crop with a 

 light steel harrow as soon as the blades 

 begin to show. The teeth should be given 

 a backward slant sufficient to produce the 

 result sought. When the grain is four or 

 five inches high, it should be harrowed a 

 second time, and even a third and fourtli 

 time under some conditions. This method 

 of destroying Russian thistles has special 

 adaptation to dry areas where the harrow- 

 ing of the land has also a beneficial influ- 

 ence on the growth of the crop. 



6. Aittunin cnltivation. Autumn culti- 

 vation will be found very helpful in 

 destroying the Russian thistle, and also in 

 preventing its further increase. It is effica- 

 cious in proportion to the early date at 

 which tlie plowing is done. 



7. Legislative enactments. When vacant 

 lands have become infested, stringent legis- 

 lation is necessary to keep the weeds prop- 

 erly in check. 



(2) THE PLANTAIN. 



The two most important varieties of the 

 plantain are known as the common plantain 

 {Plantago major) and the buckhorn or 



