INSECTS, AND THEIR RELATION TO MAN 189 



Conclusions. 1. Suppose a person suffering from malaria is 

 bitten by a certain sort of mosquito (anopheles). What 

 would likely be found afterwards on the mouth parts of the 

 mosquito ? 



2. Suppose this mosquito should now bite another person. 

 What would most 

 certainly happen? 



Observations. 1. 

 The anopheles 

 mosquito seems to 

 be standing on its 

 head when at rest, 

 while the ordinary 

 mosquito rests 

 about as a house 

 fly does. Can you 

 find any malarial 

 mosquitoes ? 



2. Try feeding 

 mosquitoes to toads. Do they eat them ? What birds also eat 

 mosquitoes? 



Conclusion. Write a paragraph telling all the ways known 

 to you for preventing malaria and yellow fever. 



Questions 



1. How tell a malarial mosquito from the common sort 

 (culex) ? 



2. Describe the metamorphosis of the mosquito. 



3. What diseases are charged to the mosquito ? 



4. How may these diseases be fought? 



Special Reports 



1. Mosquitoes and malaria. 



2. Yellow fever and mosquitoes (stegomyia). 



3. Means of destroying mosquitoes. 



4. Extermination of mosquitoes. 



5. Animals that eat mosquitoes. 



FIG. 52. Mosquitoes, a, position taken by a com- 

 mon mosquito (culex) when alighting ; b, position 

 taken by a malarial mosquito (anopheles) when 

 alighting. 



