200 APPENDIX V 



5. Breathing and respiration : definitions ; breathing movements, 



cause and effect of each; adaptations of gills (including 

 blood vessels) ; oxidation and the release of energy. 



6. Reproduction : formation of eggs and sperm-cells ; fertilization ; 



development of embryo ; food supply for embryo ; artificial 

 propagation. 



7. Economic importance : (a) for food, (b) for other purposes ; 



methods of preparing fish. 



8. Salmon and codfish: geographical distribution; food and 



feeding habits ; breeding habits ; methods of catching. 



9. Conservation of fish : disappearance of Atlantic salmon ; de- 



crease of Pacific salmon; work of National and State 

 Governments ; laws for the protection of fishes. 



E. CRAYFISHES AND THEIR RELATIVES. 



1. Regions and appendages. 



2. Adaptations for walking and swimming. 



3. Food, food getting, and digestion. 



4. Adaptations for breathing ; respiration and the production of 



energy. 



5. Habits: enemies; adaptations for protection. 



6. Reproduction and life history. 



7. Relatives of crayfish. 



8. Economic importance of Crustacea. 



F. PROTOZOA. 



1. Paramecium: structure; locomotion; food, food getting and 



digestion; respiration and liberation of energy; excretion; 

 reproduction. 



2. (Optional.) Amoeba: (use same topics as in 1 above). 



3. Comparison of Protozoa with higher animals. 



4. Economic importance of Protozoa. 



G. (Optional.) ADDITIONAL ANIMAL STUDIES. 



1. Sponges: structure; functions; economic importance. 



2. Hydra : structure ; adaptations for locomotion, food getting, 



digestion, and respiration ; reproduction ; relatives. 



3. Earthworm: structure; adaptations for locomotion; food 



getting and digestion; economic importance ; relatives. 



