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the apple crop, as there sometimes is in certain orchards, 

 there will be no place for the moths to lay their eggs ; 

 consequently there will be no worms the next year, unless 

 moths come from elsewhere. How far the moths will go 

 to lay their eggs, and whether instinct directs them to the 

 bearing tree, like the canker worm moth, we are not in- 

 formed. We have seen them when they came out of the 

 ground crawl directly to the body of the tree ; also when 

 the web of the canker worm is broken and falls to the 

 ground, the worm crawls directly to the body of the tree, 

 thence up the tree for its daily food. Now may we not 

 reasonably suppose that instinct directs the codlin moth to 

 the bearing rather than to the barren tree? 



There is much difference of opinion among entomolo- 

 gists in regard to the habits of these insects, whether they 

 are single or double brooded. The fact seems to be this : 

 In the northern latitudes, where the growing season is 

 short, they have but one brood in a year. In the warmer 

 latitudes, like California, they are said to have three 

 broods in a year. In the intermediate latitudes two broods 

 in a year, or partially so. The early ones have a second 

 brood, the later ones but one brood, as may be supposed 

 it is with us. 



I have the copy of an interesting letter from Professor 

 Charles V. Riley of Washington, (formerly of Missouri). 

 He confirms my representation that the moths appear 

 about the time the apples are forming, others in cool 

 places come out later, and others still later, so that he has 

 known moths of the first brood and moths of the second 

 brood in the same tree at the same time. 



He further informs us that he has bred those moths, who 

 when confined would so cover the apple with eggs that 

 when the worms hatched, they would enter the apple from 

 every side, and soon so perforate and devour the apple as 

 to die of starvation. 



