284 



THE MONTHLY BULLETIN. 



lip tilt' :s(iil ;iii(l jiUowiiiii' it to dry out, will help to reduce the numbers. 

 Irrigated districts are more liable to become infested and are very 

 favorable to sju'cad and diffi( iilt of control. 



Fig. 285. — Potatoes showing the work of the common nematode or eelworm, Hetero- 

 dera radicicola Greef. ( Photograph by Bremner. ) 



