Xlll 



I PAGE 



2, 3. That the earth turns from west to east on its own 



axis, or centre . . 9394 



4. That the moon has no light of its own, but reflects 



it from the sun ib. 



s, 0, Observations on the form and situation of the 



moon . . 95 



7, 8, 9. That the moon is an earth like ours . 9596 

 10. Reflection . . .97 



CHAP. XVI. 



The Milky Way ; Solar Systems, or a Plurality of 

 trortds. 



1. Introduction . * .98 



2. That what we call the milky way is a vast assem- 



blage of fixed stars . . gg 



3. That those stars are suns like ours, have planets of 



their own, and form various solar systems ib. 



4 10. The ancients give cogent reasons tor their opi- 

 nion of a multiplicity of worlds . 100 102 



CHAP. XVII. 



Of Comets. 

 l , The Newtonian account of comets . 1 0$ 



