194 



Trees, Stars, and Birds 



FIG. 127. 



Can you explain why it is that the Dipper and other constellations 

 in the northern sky seem to revolve about the polestar? 



a queen, the wife of Cepheus and mother of Androm- 

 eda, who was rescued from a sea monster by Perseus. 

 There are constellations named after all of these 

 characters, 



