it performs its re volutiort precisely in the same 

 space of time that it revolves round the earth. 



It has its gradual and periodical increase and decrease 

 of light, according to its position with respect to the ' 

 sun,, which enlightens -it; and tt> the* earth, whereon it 

 reflects tire Itgiit-cf that sun-/- 



The disk of the- moon is externally divided info 

 luminous and obscure parts : the former seems -analo- 

 gous to lands en our globe, and the latter to our 



In the luminous parts there have been observed some 

 places brighter than the rest, which cast a shade from 

 their side, which has been measured, and the tract ascer- 

 tained. These parts are mountains much higher than 

 ours, in proportion to the size of the moon, and whose 

 tops the sun Iras been seen to gild when that planet is 

 quartered) the light descending by little and little to 

 the foot of these mountains, they appear at that time 

 entirely bright Some are by themselves, others form 

 very long tracts, 



Venus has, like the moon, her spots and mountains*: 

 so have Mars and Jupiter. Those in Jupiter form large 

 belts, which make considerable motions, like the oceans 

 overflowing the lands, and afterwards leaving them dry 

 cm his retreat* 



Mercury and Saturn are little known to us, the first 



because it is too near the sun, the- second because it is 

 at too great a distance* 



Lastly* the, sun himself ha? spats, which seem to move 

 regularly, and whose size equals, and very oiten exceeds, 

 that of such as arc seen in the greatest planets. 



8. Pure spirits, immaterial and intelligent substances, 

 e and solid substances; mixed beings, formed 



