21 



insects this larva, -when it has once set, does not immediately cover 

 itself with a waxy secretion. It may remain for several days entirely 

 naked, and scale growth is both irregular and slow. If there are only 



Big. 11. 



The ro9e scale : female enlaiged at a ; male at 6. From Dlv. Ent., U. S, Dept Agl. 



a few of the insects and the plants are vigorous, no perceptible harm 

 will be done; if the plants are well set with fruit or flowers and not 

 too well fed, the scales sometimes cause considerable injury. 



Remedial Meaknresi 



In the garden all that is usually necessary to control this insect 

 is to admit light and air and to cut out the worst infested shoots. 

 Eose plants can, as a rule, be entirely cleaned in this way, and 

 blackberry and raspberry plants need little more. Judicious trim- 

 ming in winter will be aU that is necessary in most cases. 



Sometimes rose plants are so situated that cutting back is not de- 

 sirable and then a resort to insecticides is necessary. Winter ap- 



