NOTES ON SATURN. 75 



planet are seen tliroiigh the dusky ring and the inner edge 

 of B. I cannot determine any difference of brightness be- 

 tween the preceding and following parts of the dusky ring. 



I have watched carefully and repeatedly a minute — ex- 

 cessively minute — and wdiite protuberance on each side of 

 the planet apparently off the broad bright equatorial belt, 

 but really at the points where the faintly dark belt nearest 

 the dusky ring disappears at either limb. This would seem 

 to indicate that this faint dark belt is raised above the gen- 

 eral surface of the splieroid. 



March 31. 1886. To this date I have not been able, on 

 account of atmospheric conditions, to test the last observa- 

 tions of Februarv 14. 



