HOW TO OBSERVE THE HEAVENS. 



Interesting Nature of the Subject. Diurnal Rotation. Circumpolar Starg. L'ssa Major. Forms 

 of the Constellations. The Pointers. The Pole-Star. Cassiopeia. Capella. The Swan. 

 Equatorial Constellations. Orion. Sinus, or the Dogstar. Aldebaran. Procyon. Auriga. 

 Cohtmba. Herschel's Observations on Sirius. Dr. Wollaston's Observations. Aspect of the 

 Heavens at different Seasons of the Year. Uses of the Celestial Globe. To ascertain the Aspect 

 of the Heavens on any Night at any Hour. Effect of the Telescope on Fixed Stars. Relative 

 Brightness of the Stars. Theory of refracting and reflecting Telescopes, as applied to the 

 Stars. Manner in which Sir \V. Herschel applied it. Method of estimating the Brightness of 

 small Stars. Method of observing variable Stars. Double Stars. Description of the Micrometer. 



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