122 



ANIMAL BIOLOGY 



How does the tail of a shark or a gar differ from the 

 tail of common fishes ? (Fig. 228.) Do you know of fish 

 destitute of scales ? Do you know of fish with whiplike 

 feelers on the head ? (Figs.) Why are most fishes white 

 on the under side ? 



Comparative Review. (Copy table on one page or two facing pages 

 of notebook.) 





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FIG. 229. DRAWING THE SEINE. 



