PROTOZOA 



Suggestions for Laboratory Work. — Specimens of 

 Amoebae may be found upon the slimy coating of stems which 

 have been standing for some time in water, or upon submerged 

 leaves, or "on the slimy ooze upon the mud at the bottom of 

 standing water," upon the under side of lily pads or along their 

 stems, or from the scum found on the inside of old water- 

 barrels. 



The Paramsecium may be obtained by soaking in pond water, 

 for a week, in a warm place, hay which has been cut in pieces. 

 A scum will appear. With a pipette place a drop of this scum 

 under the microscope and follow the outline given below, or 

 verify the points mentioned in the text. 



MORPHOPHYSIOLOGIC STUDY 



1. The Body is one-celled. 



(1) Shape? 



(2) Size? 



(3) Fixed or free? 



(4) Naked (as in Amoeba), or covered with cilia, or with a 



shell? 



2. Appendages of the body. If any, called what? 



3. Motion. In the higher forms, motion is carried on by 

 means of (1) the muscular system, and (2) the skeleton. How 

 are motion and locomotion carried on by this one-celled pro- 

 tozoan? 



4. Nutrition of the Body. Digestion, circulation, respiration, 

 excretion — how are these processes carried on, since this is a one- 

 celled animal and has no organs? 



5. MultipHcation. Is it asexual, sexual, or does it multiply 

 both asexually and sexually? 



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