CONTENTS. 



Page. 



Distribution - - - ^ 



Extent of loss - ---- -- - '^ 



Description of the disease - ^ 



Cause of the disease " 



Natural infections — - - ° 



Artificial infectious ... - ■ - - ° 



The failure of soil fungicides - ■ ^ 



Preventive measures 1^ 



Hygienic treatment ... 1^ 



Selection of resistant races - H 



Control of other wilt diseases by selection -- 14 



Conclusions ...... --- l'^ 



Explanation of plates -. ■ I*' 



3 



