FLY 



2233 



FLY 



OUTLINE AND QUESTIONS ON THE FLY 



Outline 



I. Parta of the Fly 



(1) Wings 



(a) Only Insect except one which has 



two wings 



(b) Distinguishing marks of wings 



1. Transparent 



2. Not folded 



3. Lengthwise veins 



(2) Rodlike "steering" organs 



(3) Head 



(a) Large compound eyes 



(b) Mouth parts 



II. The Mouse Fly 



(1) One of 40,000 species 



(2) Rapid breeding 



(3) Life history 



(a) Eggs laid in warm, damp place 



(b) The maggots 



(c) Pupae 



(d) Full-grown flies 



(4) Danger from flies 



(a) Filthy breeding places 



(b) Diseases carried 



1. "Summer complaint" 



2. Typhoid 



3. Tuberculosis 



4. Filth diseases 



(c) Loss in money and lives because 



of flies 



III. Campaign Against Flies 



(1) Old, inadequate methods 



(a) "Shooing" the flies 



(b) Screening 



(2) The modern crusade 



(a) Prevention 



1. Killing the winter fly 



2. Cleaning up breeding places 



3. Family work and community 



work 



(b) The active flght 



1. Fly traps near feeding places 



2. Fly traps outside screen doors 



3. Method of making an effective 



trap 



Questions 



Why is it possible for a fly to walk across the ceiling without falling? 



What is the significance of the question "Why not put all the flies in jail and 

 let ourselves out?" 



Why should the opening in a fly trap be at the bottom rather than at the top? 



Name two "flies" that are not really flies. 



Why is it not possible for agricultural communities to free themselves of flies 

 as completely as can cities or villages? 



How old must a fly be before it can lay eggs? What significance has this in 

 the fight against the fly? 



What was the ordinary method of dealing with flies in dining-rooms a half- 

 century ago? 



What is the first act of a fly on emerging from the. pupa stage? 



Why is it unwise to spend sympathy on the surviving winter fly? 



Is a campaign for the total extermination of flies in a community practicable? 



Give two slogans of the anti-fly crusade. 



Why is it possible for a neighborhood to be practically free from flies, and two 

 weeks later to be swarming with them? 



What ailment, especially dangerous to children, might well be called "fly com- 

 plaint," and why? 



Why cannot one family protect itself against flies without any community effort? 



What peculiarity of a fly is its scientific name based on? 



What fits this insect particularly for carrying bacteria? How many is it esti- 

 mated that it can carry at one time? 



