48 A GUIDE FOR THE STtJDY OF ANIMALS 



Suggested drawings. 



a. A drawing to show all the details seen in the living 

 Paramecium. 



b. A diagram to show the path followed by a Para- 

 mecium to get around some obstacle. 



c. Drawings to show that paramecia are constant in 

 shape and yet flexible. 



d. A drawing to show at least one stage in fission. 

 This may be from a permanent preparation. 



e. A drawing to show paramecia conjugating. This 

 also may be from a permanent preparation. 



/. Instead of all these separate drawings they may be 

 combined into one. Represent the field of the microscope, 

 and in it draw all necessary figures, to show the facts 

 called for in the first five drawings and any other facts you 

 have observed about living protozoa. Make the whole 

 drawing to scale. 



Summary of Important Points in the Study of Paramecia 



1. Look back over your study of paramecia and list the 

 different kinds of work you saw paramecia doing ; also the 

 kinds of work you infer they can do. What organs have 

 they to use .' When there is no organ to do a given thing, 

 e.g. to digest food, how is the work done .'' 



2. What conditions are favorable to paramecia ? Why 

 are they so numerous under favorable conditions ? 



3. What would you call a successful animal .' Are 

 paramecia successful ? Give reasons why they are or are 

 not. 



Comparative Study of Protozoa 



To enlarge your idea of what a cell can do, spend as 

 much more time on the one-celled animals as your course 



