PLANET SATURlf. 399 



•nly be expected from the successive attention of astro- 

 nomers. 



On the Atmosphere of Saturn. 



June 9, 1806. 'I'he brightness whicli remains on the Atmosphere of 

 north polar regions, is not uniform, but is here and there .Saturn and of 

 tinged with large dusky looking spaces of a cloudy at- ^* 



mospheric appearance. 



From this and the foregoing observations on the change 

 of the colour at the polar regions of Saturn arising most 

 probably from -b periodical alteration of temperature, 

 we may infer thee existence of a Saturnian atmosphere: 

 as certainly we cannot ascribe such frequent changes to 

 alterations of the surlace of the planet itself; and if we 

 add to this consideration the changes I have observed in ' 



the appearance of the belts, or even the belts themselves, 

 we can hardly require a greater confirmation of the exist- 

 ence of such an atmosphere. 



A probability that the ring of Saturn has also its 

 atmosphere has already been pointed out in a former 

 Paper. 



Slough, near Windsor^ 

 June 12, 1806. 



H«h2 SCIENTIFIC 



