I I IER, SATURN 175 



him The result* he arrived at were very near the 



of routiou of Jupiter on hU aiu '- 



ft, M. ft. 



:. H ; 

 Time of revolution in iu orbit of 



D. n. M. n. M. *. . 



Pint (Atomic . I 18 20-6 



Second Mtellito . . . S 18 17-9 



nlttiellite . . 7 3 59-n 12 33 



rth natelliUj . . . 16 18 6*1 16 16 :? 



If t!.- whit spots on the belts were connected with 

 masses in Jupi tor's atmosphere, they w-.uM 

 us well aa rotate. Herechol was aware of this. 

 ari<l. since his day, the amount of drift has been 

 estimated at 270 miles an hour in the same 

 as the rotation. In other words, they would take 

 lays to go round the planet from this cause 

 Hi'rschel was also persuaded that the four 

 satellites revolve on their axes in the same period as 

 revolve round Jupiter, resembling in this respect 

 moon. Laplace was disposed to accept tlii- 



;on. f 



For more than a century and a half the pi 

 turn had been the object nn-l. it may 1- -.-.M. the 

 iir of every astronomer's curiosity, mainly in 

 of the ring which th< t. lescope had 

 it to possess, and the singular shapes the 

 was found to assume. Five moons were also 

 discovered to be circling round the planet, and 



1 The grwt red ipotgirM 9 h. 55 ro. 94 t. 

 *Sy**moftk* World, Bk. I. cht. vii 



