148 



BUTTERFLIES AND MOTHS. 



of the order of Lepicloptera (i.e., Moths and Butterflies), 

 aEd to point out how we may, by acting on these, be 

 sure of not wasting our work in applying methods of 

 prevention and remedy. There are numbers of other 



Fig. 116. — Oak-leaf Eoller Moth and caterpillars. 



classes of attacks, almost countless numbers of indi- 

 vidual kinds of attack, which cannot be entered on 

 here, but the principle holds good with all, — find out 

 the chief points of the life-history ; reflect how these 

 can best be met by available (and, if possible, commoji) 

 agricultural treatment ; and having made this out, let 

 the plan be soundly and thoroughly carried out. Half 

 doing is the cause of much failure. 



