PREFACE. 



The aggregate of loss to the farmer 

 resulting from the extent to which weeds 

 prevail on the average farm is very great. 

 It is equally true that such loss could in a 

 great measure be prevented. That it is 

 not prevented is due not so much to indif- 

 ference on the part of the farmer as to 

 the extent to which the presence of weeds 

 will be tolerated, as to a lack of informa- 

 tion with reference to the most eftective 

 methods of fighting them. This book has 

 been written in the hope that it will in 

 some measure supply this need. In this, 

 the third edition, several weeds are included 

 in the discussion that are not considered in 

 the previous editions. Aluch has also been 

 added with reference to efifective methods 

 of eradication based upon recent experi- 

 mentation. 



The author wishes to acknowledge his 

 indebtedness to Hon. Geo. M<S^*i'^f5^^^ 



