122 ANIMAL ACTIVITIES. 
One of the Infusoria found in infusions of vegetable 
matter is the Paramecium, or slipper-animalcule (Fig. 
107). This may be found and stud- 
ied very easily. Where a compound 
microscope is available the follow- 
ing exercise may be used. 
Laboratory Exercise. Examine 
in a watch-glass by using a low 
power of the microscope a few 
drops of stagnant water known to 
contain Infusoria. 
1. Does the Paramecium have a 
definiteshape? Isit bilateral? Is 
the Ameeba bilateral ? 
2. Place a few drops of water 
containing the slipper-animalcule 
on a slide with a few fibres of cot- 
ton and examine with a higher 
power of the microscope. Is the 
body divided into parts or cells? 
J 3. Do you see the movement of 
a ee cilia? On what part of the body 
tended; Z, contract- are they situated ? 
ed; C, in fission. 4. Do you find a groove sur- 
rounded by cilia ? 
5. Do you find a mouth ? 
6. Do you find a nucleus ? 
7. Are there any contractile vacuoles ? 
8. Feed the animal with bits of indigo. Where do 
the blue particles go ? 
Summary of Drawings. (a) A sketch of several 
animals as they appear when viewed with a low power 
of the microscope. 
(4) Sketch of a single animal showing as many parts 
as you have seen. 
In the Paramecium the activities of life are carried 
on much as they are in the Amceba. There is, how- 
ever, a greater specialization of parts, especially the 
