5"6 Solar System. 



moon commences at the eastern and ends 

 at the western. 



The Satellites, or moons, are often 

 eclipsed by the planets to which they be- 

 long. 



A digit is the 12th part of the sun or 

 moon's diameter, and is a term often 

 used in speaking of eclipses. The disk 

 of the sun or moon is its round face, 

 which, on account of the great distance 

 of the object, appears fiat. The edge or 

 border of the disk is called the limb. 



The immersion of a heavenly body, is 

 the time when an eclipse begins ; its 

 -emersion is when it begins to re-appear. 



