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THE GUIDE TO NATURE 



By Professor Eric Doolittle of the University of Pennsylvania. 



THE watcher of the heavens has ob- 

 served how, for some weeks past, 

 the evening- skies have been steadily tak- 

 ing on their summer aspect. Slowly the 

 bright winter groups have been with- 

 drawing in the west; the Great Dipper 

 has swung to its highest position in the 

 heavens, Bootes. Corona and Hercules 

 are steadily mounting toward the zenith. 

 the beautiful early summer star. Spica. 



scene spread out above us that adds so 

 greatly to the variety and pleasure of 

 celestial observations. 



The Most Striking Summer Group of 

 Stars. 



Low in the southeast there is now en- 

 tering the evening sky a beautifnl figure 

 which is the most striking and interest- 



NOT3TH 



SOUTH 



Figure 1. The Constellations at 9 P. M., May 1. (If facing south hold the map upright. 

 west hold West below. If facing east hold East below. If facing north hold map inverted). 



If facing 



has almost reached the meridian in theing of all our summer groups. This is 

 south, while Vega, the most brilliantthe great Scorpion, the slayer of Orion, 

 summer star of all, is already high abovewho for this deed was exalted in the 

 the ground in the northeast. It is thisskies and there occupies such a position 

 constant transformation of the beautifulthat always while he enters the heavens 



