166 OULT1NES OF NATURAL PHILOSOPHY. 



For the six principal planets, these arcs are exhi- 

 bited in the annexed Table, according to their 

 mean quantities. See LA LANDE, 1192. Also 

 BIOT, 97. vol. in. 



' 



TABLE. 



Jooci ; 



165. The apparent motion of an object is af- 

 fected by the motion of the spectator ; and if 

 there is not a certainty that he is at rest, when 

 the motion of the former appears extremely ir- 

 regular, it is natural to inquire, whether any mo- 

 tion 



