ii8 FARM FRIENDS AND FARM FOES 



the green pulp. Here they continue until they become 

 full-grown as larvae, often doing an enormous amount of 

 damage to the peach crop. Finally they emerge from the 

 fruits and change to pupae on the outside of the peach, 

 generally in or near the stem cavity. A week later, these 

 pupae change to moths that deposit their eggs upon the 

 peaches, and these eggs hatch into worms that also burrow 

 into the peach fruits, finally maturing and pupating on the 

 putside of the fruits in the same way that the second 

 generation did. 



., A week later, the third brood of moths appears, generally 

 during the latter part, of August, and these deposit their 

 eggs upon the bark of the trees. The larvae that hatch 

 from this lot of eggs burrow immediately into the bark 

 and hollow out the hibernating cells. 



There, is thus in the extraordinary history of this Peach- 

 twig Moth a series of three broods of larvae, one of which 

 is exclusively a borer of bark and twigs, the second of 

 which is both a twig borer and a fruit worm, and the third 

 of which, on fruiting trees, is exclusively a fruit worm. It 

 has been found that the hibernating worms may be de- 

 stroyed by spraying the trees in spring with a lime, salt, 

 and sulphur wash, and the injuries may be prevented to a 

 considerable extent by burying or covering the piles of 

 wormy peaches. 



