ASTROXOMV WITH AX OPERA-GLASS. 



63 



the story of Perseus and Andromeda is, of course, well known to 

 nearly all readers, yet, on account of the great beauty and brilliancy 

 of the group of constellations that perpetuate the memory of it among 

 the stars, it is worth recalling here. It will be remembered that, as 



Map 4. 



Perseus was returning through the air from his conquest of the Gor- 

 gon Medusa, he saw the beautiful Andromeda chained to a rock on 

 the sea-coast, waiting to be devoured by a sea-monster. The poor 

 girl's only offense was that her mother, Cassiopeia, had boasted for 



