W. R. Dawes on the Telescopic Appearances of Saturn. 163 
Professor Secchi has also described the step-like concentric 
bauds of shading on ring B, exactly as they were described b: 
the advantageous use of high powers; aud my snbsequent ob- 
servations, under much better circumstances, and especially on 
the L0th of this month, convinced me that my first impresston 
Was erroneons, or that a change to a considerable, and in fact un- 
accountable, amonnt had taken : ; 
“he first satellite of Saturn (now usually called Mimas) is 
Slated by Professor Seechi to have been seen on November 19th, 
hear its great western elongation ; having been found by putting, 
the planet nearly ont of the field, aud afterwards seen steadily z 
With the planet in full view. It is surprising that he does not 
mention Enceladus, which must have been close to Mimas at 
that time, if the latter occupied the place indicated. As my tel- 
escope has not shown me Mimus, I cannot say where that satel- 
lite might have heen; bunt my own observations prove that En- 
Celadus occupied precisely the situation which the Professor has — 
ascribed to Mimas ; and TL eannot but think it probable that far- 
ther observations may have convinced him that it was not the 
Jirst, but the second, satellite which he saw. 
_ the bright zone on the ball, which commences almost pre- 
cisely at the equator, aud extends uorthwards as far as the ring 
Permits it 10 be seen, forms one of the most conspicuous features 
Of the planet. It has been repeatedly referred to by Professor 
Secchi, as caused by the reflection of the sun’s light from the sur- 
face of the ring. ‘Tivo considerations seem to me to be qnite 
— Conclusive against its arising at all from that cause. One is, that 
this bright zone occnpied precisely the same situation, aud was 
very conspicuous, when the plane of the ring passed through the 
. Sess “ Remarks on the Planet Saturn,” by the Astrono- 
~Mer Royal, in the Greenwich Observations for 1844, p. 44.) 
