INTRODUCTORY STUDIES OF LIVING ANIMALS 3 



THE LIVING MAGGOT 



Materials. 



Living specimens in pans or cotton-stoppered bottles, 

 with some food material and moist cloth or paper ; lenses. 



Observations. 



Notice the general worm-like form of the maggot, or 

 grub, the plain and uniform color, and the absence of all 

 elaborate structures, as wings and feelers. 



1. Since this creature is destined to become a flying or 

 walking insect, what organs will have to appear .' Is 

 there any indication of these structures at present ? 



2. Give the color of the specimen, and explain how the 

 presence or absence of strong light seems to have affected 

 the color. Is this effect usual in animals or plants that 

 you know ? 



3. Tell how the animal gets from place to place, describ- 

 ing any special structures you find which aid in this work. 



4. How can you tell the head end } Tell how the 

 amount of work that the mouth and mouth parts do affects 

 their size and indirectly that of the region where they are. 



5. What senses and sense organs has the maggot .' 

 Test any of these senses or organs gently, by any means 

 at your disposal, or recall any experience you have had 

 along this line. Which senses or organs seem to be best 

 developed .? 



6. Explain briefly how the active or sluggish habits either deter- 

 mine or are determined by the condition of the senses or sense organs. 



7. Since "Mother Nature" seems to want maggots to develop rap- 

 idly, tell how she economizes in energy and material when forming 

 them. 



8. Show how the development of maggots in "refuse matter is 

 actually beneficial. 



9. From the standpoint of flies and human welfare, show why mag- 

 gots should not be allowed to live, — stating how they may be prevented. 



