322 SCHOOL ENTOMOLOGY 



ing about ten weeks after the petals fall and a fourth three 

 weeks later will be found advisable. With thorough spray- 

 ing not over 2 or 3 per cent of the picked fruit should 

 show any injury from codling moth. Both the first and 

 second sprays are usually combined with Bordeaux mix- 

 ture or lime-sulphur solution for the control of fungous 

 diseases. 



