148 COMMON BRITISH INSECTS. 



the tree as well as the insect. The ' Gishurst Com- 

 pound ' would do as much in this way as anything 

 could, but it cannot be employed on a large scale. 



At present, the opinion seems to be that the only 

 plan which offers the least probability of success is a 

 * stamping out ' process, similar to that which saved 

 us in the time of the cattle-plague. By this plan, all 

 trees which are visibly attacked by the Scolytus are 

 to be cut down, and stripped of their bark and the 

 outer layer of wood, which are then to be burned, 

 so as to destroy the Scolytus, its larvae, pupae, and 



