BDWSIONS OF Tl 183 



cost in tune and comfort, by the sacrifice of which it is 



based for mankind. 



That Herachel waa surprised by the brightneai of 

 rings, the greater brightness of the ahining pointa 

 saw on them, and the yellowiah light of the planet. 



te clear. Whether he ever suspected a li-l.r 

 I'hosphoreaeenee of ita own in the system of Saturn, aa 

 aome obtervera have now como to think exist*, is 

 another mitt.i l.ut he waaoo the threahol.l of that 

 liflcovery, if disco \ 1*0. He entertained no sucl 



he olaaaed all the planeta " n> 

 10 general <l-tiniti<>n. of bodies not luminous in them- 

 selves," though two years of farther reflection and 

 observation may have wrought a change in a man of 

 s dear perception and quickness. On another view 

 developed ! <l:i\ lie almost anticipated recent 



research, lie denied that the ring was subdivided 

 many dark lines into a series of concentric rings, "a* 

 has been represented in divers treatises of astronoin 

 II h.-l.l to only one dr. but he was i 



:u the modern view, which represents the r 

 as a in uss of revolving satellites, kept in pom- 



y of the planet and the velocity of 

 thrir i-Mi.iii..n round him. 



>. on Saturn cover about one 

 hundred and seventy pages quarto, and the plates that 

 accompany them give a distinct idea of what he saw. 

 comparing 1. tterpress and plate we may bet 



i the relation in which he stood to his fol- 

 lowers in this field of research and disco vn v With 

 .- of the new specula, \vhit -h h< -i..unl apparently for 



ktli.- purpose of obw-r\ in- th<- i ing of Saturn more care- 

 fully, he got views that he speaks of as " uncommonly 



