I30 A GUIDE FOR THE STUDY OF ANIMALS 



4. The habits of the tree frogs and their variable color- 

 ation. 



5. The croaking of frogs and of toads. 



6. The flying frog of Ceylon. 



7. The distribution and habits of the hellbender ; of the 

 mud puppy ; of the Congo " snake." 



8. The general absence of the amphibia from arid 

 regions. 



9. Frog farming for city markets. 



10. Protective devices of various amphibia. 



11. Toads and warts. 



1 2. The homing and water instincts of toads. 



13. Hibernation, seasonal or prolonged, of toads and 

 frogs. 



14. The changes in the respiratory and circulatory sys- 

 stem during metamorphosis. 



15. Ontogeny and phylogeny, as illustrated by amphibia. 



16. The structural defects which would prevent an am- 

 bitious frog from becoming a highly trained and skillful 

 animal. 



17. The classification of amphibia, with examples. 



18. The kinds of frogs and toads found in the region 

 where you live. 



C. Studies of Living Reptiles 



Showing Diversity of Adaptation among closely related 



Animals 



The Snake 



I. What is the shape ? What regions are present ? How 

 do you distinguish between the trunk and the tail ? Has 

 the tail any use ? What are the advantages of a body 

 without limbs } 



