■ s DA Herschel’s Obfervations on the 
Dec. 2. 23 38. I fufped the 7th to be juft detached from the 
f. arm (X). . . 
o 24. I cannot fee the 7th, though I tried often for it. 
o 56. The 7th fat. is not vifible. 
From the obfervations on the feven fatellites of Saturn that 
have been here delivered, and clofely compared with their calcu- 
lated places, it appears evidently that the revolutions of thefe 
fatellites are fo well afcertained, that we may, without hefitation, 
determine that no phenomenon on the ring of Saturn, m the 
lhapeof lucid fpot, protuberant point, or latent fatellite, can be 
occafioned by any of them, when, upon computation, we find 
that the place of the fatellite differs from that where fuch 
appearances were obferved. In conference of this deduction, 
I found, that the obfervations, which will be given prefently, 
could not be explained by any of the known fatellites ; it 
remained, therefore, to be examined to what caufe to afcribe 
the appearance of fuch lucid fpots. 
The firft idea that occurred was that of another fatellite, lull 
clo fe r to the ring than the feventh ; and if a revolution, flower 
than about 1 5 hours and a quarter, could have been found, 
which would have taken in the moft material places in which 
bright fpots were feen, I fhould have continued of opinion 
that an eighth fatellite, exterior to the ring, did exift, notwith- 
standing more obfervations had been wanting to put the matter 
out of all doubt. But this being ineradicable, I examined, 
in the next place, what would be the refult if thefe fuppofed 
fatellites, or protuberant points, were attached to the plane or 
edge of the ring. 
(X) 6h. 41' 59 ". ioo°, o. 
As 
