64 



here that they will bring about an equilibrium in which the larvae of the 

 Brown Tail Moth will be kept down to innocuous numbers. 



Hardly less important is the system of inspection of nursery stock 

 imported from Europe, Japan and the New England States which was 

 established in 1909 to prevent further and more widespread distribution 

 of this pest. During the first year of inspection 196 webs were taken from 

 nursery stock imported from France. 



In connection with this work the Destructive Insect and Pests Act 

 was passed in 1910 which provided for the inspection of all foreign 

 nursery stock from infested areas, and of forest products from the infested 

 States of New England. 



A further method of control which might be used, were the infes- 

 tation to become very serious, is that of spraying of arsenicals, but with 

 the insect in question the collection of winter nests offers a far cheaper 

 method of control, and with the encouraging statistics we can look to this 

 method as the best and cheapest means of holding this pest in check until 

 the time when our imported parasites may take over the control with 

 unabated vigour for all time to come. 



