OUTLINES 



OF 



NATURAL PHILOSOPHY, 



ASTRONOMY. 

 PART I. 



PHENOMENA OF THE HEAVENS* 



SECTION I. 



OF THE FIXED STARS, AND THE CIRCLES OF THE 

 SPHERE. 



1. W&EN we look at the heavens in a clear 

 night, all the stars appear at the same distance 

 from us, and therefore seem to be situated in the 

 surface of a sphere having the eye for its centre. 



Q. If we take a view of the stars again, in the 

 Course of the same night, we find that they re- 

 tain their positions relatively to one another, 

 but have changed them relatively to the earth, 



VOL. II. A having 



