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Practical Zoology. 



cealed? Open the body cavity. Is the digestive tube long or 

 short as compared with that of the frog ? What reason for this ? 

 Can you find any traces of^ills ? Of lungs? Is there a backbone? 

 Do you find a brain and spinal cord ? 



Make a series of drawings showing the different stages of 

 development. 



Topics for Reports. Frogs as Food. The Axolotl. Value of 

 Toads. The Tree Toad. 



Read American Natural History, Hornaday. 



