SPRAYING THE .VPPLE ORCHARD. 



21 



scales, scalloped something like the plumage of a bird. Near 

 the hind angle of each front wing there is a large dark 

 brown spot marked with streaks of bronze or gold. The hind 

 wings are of lighter grayish-brown color, darker toward the 

 outer margin." The moths fly mostly during the early 

 evening and if the evenings bo \v;irni when llicy emerge, 

 the females commence to ____ 



lay their eggs at once; -■ ?*-^..' 



but if cool, they may 

 wait for ten days or so 

 without laying. 



The Egg. — In con- 

 finement the eggs are all 

 laid in a few days or a 

 week, but out of doors 

 the females continue 

 laying for nearly a 

 month, depositing in all 

 from twenty to seventy 

 eggs, the average number 



. r>t> Fig. 11.— Ont" ul tlu- largo cage.s used in 



being about fifty. The the study of the apple worm. 



egg-laying habits of the moths were 

 studied with great care the past season, 

 and will be observed again next summer. 

 Among other methods used for securing 

 an exact knowledge concerning them, 

 was that of erecting a large cage cov- 

 ered with cheese cloth over a ten-year- 

 old apple tree and introducing in it a 

 single pair of the codling moths. Be- 

 fore doing so every leaf on the tree was 

 carefully examined to bo sure that no 

 eggs had already been laid. The leaves 

 FiG.i2.-"The individ- ^^(^ fj-^it qq ^hc tree were then exam- 



oal egg upon the fruit 



small ^S^bi'hftlr." '^^^ ^^ frcqucut intervals, every fruit 

 Natural .size. r^-^^ jg^^f being examined and each ^^,^ 



marked with a tag as laid. This enabled us to determine ex- 

 actly when and where the eggs were laid, how far they 



