- 34 - PARAMOECIUM. 



60. Living Animal. Put a drop of water containing living Paramoecia on a slide 

 and then put a drop of dilute gum next to it. With a needle make the two drops flow into 

 one, but do not mix them. Put on a cover-glass and examine under both powers. The 

 gum will slacken the movement of the animals. Draw an example to show : ectoplasm ; 

 endoplasm ; cuticle ; cilia ; oral groove ; gullet ; food-particles enclosed in food-vacuoles ; 

 two contractile vacuoles ; excretory particles ; macro-nucleus, 



61. Stained Animal. Examine the demonstration specimen of a stained Paramce- 

 cium showing, in addition to the parts mentioned in paragraph 60, the macro-nucleus and 

 micro-nucleus. 



62. Stained Animal. Examine the demonstration slide of conjugating individuals. 



