LESSON VIIT. 



ON JUPITER. 



Next Jove, prodigious planet of the skies ! 



His orb presents, of huge amazing size, 



In bulk none equals his enormous mass : 



The whole joint system his contents surpass. BROWN, 



1 HUS sang the poet: his assertion was strictly 

 true, when the general opinion was that there were 

 only six primary planets ; but as there has a se- 

 venth lately been discovered, and that a large one, 

 there now remains some doubt: however, as the 

 diameters of each of the planets are given in these 

 Lessons, my young readers may find if Mr. B 's 

 assertion will now hold good, when they have lei- 

 sure to perform the necessary operations. 



This planet has the sa.ne name as the grand 

 heathen deity, viz. Jupiter, the character by which 

 he is denoted is It, to represent the thunderbolts, 

 as some people suppose ; this mark is the same as 

 that by which the chemists denote tin. 



Jupiter is situated between Mars and Saturn 

 and is the fifth primary planet, reckoning from the 

 Sun : his mean distance from the Sun is 52 of those 

 parts, of which the Earth's distance is 10: hence 

 his real distance is about 490 millions of miles. 

 His annual revolution about the Sun is performed 



in 



