74 



The Hemlock Chermes. Stanley Park, Vancouver. (Original). 



and the missing points will, it is hoped, be discovered this season. As 

 it was extremely desirable to ascertain the prevalence of the injurious 

 bark beetles, D. obesus, in the Sitka spruce, a survey of the whole area 

 of the Park was undertaken to locate and mark all beetle-infested trees, 

 in order that they might be cut down and removed as soon as was prac- 

 ticable. 



