AND OTHER INJURIOUS INSECTS OF I907 AND I908. 



99 



boxes. Birches on our private grounds and parkways should be care- 

 fully watched, and if any portion is observed to be dying, careful search 

 should be made for this pest. In cutting off any portion of an infested 

 tree, care should be taken to see that no borers are left in bark of the 

 portion still standing. 



Fig. 44. Work of the Birch Borer. Original. 



