380 GENERAL SCIENCE 



5. During the summer watch pear trees for dead twigs caused by 

 pear blight. What is the best remedy? 



6. Examine trees for various kinds of scale insects. Which is the 

 most destructive? 



7. Winter apples sometimes contain " worms." What is the name 

 of the "worm"? How did it get there? What is the best method 

 of destroying this insect? 



