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NATURE STUDY 



Why does the fish open his mouth continually when he 

 is not eating ? What else opens as frequently ? Why ? 



With the drawings, teach nostrils, mouth, gill covers, 

 scales, lateral line, straightening out at the same time 

 their ideas of the functions of these organs. 



Teach the elimination of the waste food, which is very 

 evident in the gold fish. 



Tadpole. 

 Facts : 



The tadpole is the larval form of a frog or toad, re- 



Eyt. 



hojTRlL-,., 



sembling its fishlike ancestor much more than its pro- 

 spective adult form. 



