236 THE APPLE CULTUKIST. 



ery tree in a large orchard during so many months of the 

 year. But bottles of sweetened water may be quickly re- 

 newed after the contents have been cast out. The old 

 adage, " What is worth doing at all, is worth doing well," 

 was never truer than in fighting this insect. Apply the 

 remedy thoroughly during two successive years, and you 

 will have utterly routed the enemy ; and this is more espe- 

 cially the case where an orchard is not in too close proxim- 

 ity to a forest or to slovenly neighbors. Fail to apply the 

 remedy, and the enemy will, in all probability, rout you. 

 The reason is simple. The female being wingless, the insect 

 is very local in its attacks, sometimes swarming in one or- 

 chard, and being unknown in another which is but a mile 

 away. Thus, after it is once exterminated, a sudden inva- 

 sion is not to be expected, as in the case of the Tent-cater- 

 pillar, and of many other orchard pests ; but when the Can- 

 ker-worm has once obtained a footing in an orchard, it mul- 

 tiplies the more rapidly, for the very reason that it> does not 

 spread fast. As it is always easier to prevent than to cure, 

 it were well for the owners of young orchards, in neighbor- 

 hoods where the Canker-worm is known to exist, to keep a 

 sharp look-out for it, so that upon its first appearance the 

 evil may be nipped in the bud. In the same manner that it 

 is exterminated in the individual orchard, it may, by concert 

 of action, be exterminated from any given locality. When 

 once the worms are on a tree, a good jarring will suspend 

 them all in mid-air, when the best way to kill them is by 

 swinging a stick above them, which breaks the web, and 

 causes them to fall to the ground, when they may be pre 

 vented from ascending the tree by the tin flange around the 

 tree (Fig. 51, p. 117). Birds will destroy a large number of 

 these pests, when they are young and tender, in the larva 

 state. There will be no difficulty in exterminating the Can- 

 ker-worm from every orchard, if proper efforts are employ- 



