1 78 Trees, Stars, and Birds 



Sinus (sir'i-us) 



Vega (ve'ga) 



Capella (ka-pel'a) 



Arcturus (ark-tu'rus) 



Rigel (rl'jel) 



Procyon (pro'si-on) 



Altair (al-tair') 



Betelgeuse (bet'el-guz' u as in bur) 



Aldebaran (al-deb'a-ran) 



Pollux (pol'uks) 



Spica (spi'ka) 



Antares (an-ta'res) 



Fomalhaut (fo'mal-o) 



Deneb (den'eb) 



Regulus (reg'u-lus) 



Most of these fifteen stars will be mentioned again. 

 Their names and locations in the heavens can be learned 

 when we study the constellations in which they are 

 placed. On a summer evening or early in the fall one 

 can see only seven or eight stars of the first magnitude. 

 Most of the bright stars in the sky are of the second mag- 

 nitude. One estimate of the number of telescopic stars 

 places the total at about 300 millions, and it is probable 

 that there are in the universe not nearly so many stars 

 as there are people on the earth. 



Apparent motion of the stars. The rotation of the 

 earth on its axis makes the stars appear to rise in the east 

 and set in the west, or, if they are far enough north, to 

 revolve in circles around the north pole of the heavens. 

 They seem to have another motion also, because of the 



