THE SUN AND OTHEK STARS 271 



275. Stars visible in October, November, and December. 1 

 In the limits of so brief an outline as that here presented it 

 is not possible to do more than suggest a few of the more 

 important and easily recognizable constellations of our sky, 

 and to show how further studies may be made by those 

 who are interested. It is assumed that the time for the 

 position named is the middle one of the three months 



FIG. 133. The Big Dipper 



Photograph taken so as to omit almost all stars except those which compose the 

 dipper. Note that the second star from the left is u so-called douhle star. Photo- 

 graph by the Yerkes Observatory 



and about eight o'clock in the evening. Fof the first 

 month the position would be about 15 east of the positions 

 indicated, and for the third, about 15 west. 



The North Star and the Big Dipper are easily located. 

 The Big Dipper is composed of a group of bright stars so 

 arranged that the handle and bowl of the dipper are visible 

 in the northern sky. The stars of the dipper move in such 



1 There are several types of star charts or cards which may be secured 

 from book dealers. Some of these are so constructed that they may be set 

 for any day of any month during a period of years. Such charts or cards 

 should be used in connection with this discussion in order that each pupil 

 may make his own study of the stars. By use of such a chart this part of 

 the text will serve as a guide for observations, but it should not be used as 

 the basis for mere memory work. 



