SUGGESTIONS 353 



chipping, vesper, song, field, and grasshopper sparrows, 

 are all beneficial. They look much like the English 

 sparrow and care should be taken to see that they are 

 not killed by mistake. 



PRACTICAL QUESTIONS 



1. Of what value is the study of insects? 2. Distinguish be- 

 tween chewing and sucking insects. 3. In what way may the 

 structure of an insect determine the kind of remedy to be used in 

 controlling it ? 4. Give the composition of an internal and of an 

 external insecticide. 5. Describe the relation of the house fly to 

 man. 6. Discuss the ravages of the San Jos6 scale. 7. In what 

 way may parasites be beneficial ? 8. What have you learned about 

 the codling moth ? 9. Speak about the scale parasite. 10. Of what 

 benefit are bees to the farmer? 11. Commit to memory the quota- 

 tion from Longfellow. 12. How can we prove that birds are an aid 

 to farmers? 13. Have you ever seen any birds doing damage to 

 man? 14. What bird do you consider of least value? 



HOME EXERCISES 



1. Collect all the insect pests you can find at home. Bring them 

 along to school for study. 



2. Select an insect pest of your garden or your father's farm, and 

 give an oral report on what you have done to combat it. 



3. Make a careful study of one bird, like the grackle, which may 

 be regarded of doubtful value. Follow it for one hour and report its 

 work. 



SUGGESTIONS 



1. An endless variety of school exercises is possible with insects, 

 almost any time of the year. In many sections, the milkweed worm 

 is common when school starts in the fall. Its transformation in 

 a tumbler is delightfully interesting and instructive. It passes 

 through the same stages as all the higher insects, eggs, larva or 

 caterpillar, pupa, and adult. 



2. A pest like the cabbage worm or the codling moth, should be 

 brought to school, placed in a tumbler or box, and fed, to get it to 

 pass on to the next stages. Worms should be fed on what they are 

 found eating. Cabbage worms are usually available in September. 

 All that is necessary is a tumbler covered with netting held in place 

 by a rubber band. Collect a few worms and a part of a cabbage leaf 



