on the Planet Saturn. 1 1 
which made it very eafy to atcertain whether the ftais I took 
to be fatellites really were fo ; and, in about two hours and an 
half, I had the p'leafure of finding, that the planet had vifibly 
carried them all away from their places. I continued my ob- 
fervations conftantiy, whenever the weather would permit ; and 
the creat light of the forty-feet fpeculum was now of fo much 
ufe,°that I alfo, on the 17th of September, detected the 
feventh Satellite, when it was at its greateft preceding elon- 
As foon a's I had obfervations enough to make tables of the 
motion of thefe new fatellites, I calculated their place back- 
wards, and foon found that many fuipicions of thefe fatellites, 
in the lhape of protuberant points on the arms, were con- 
firmed, and ferved to correct the tables, lo as to render them 
more perfeft. Fig. 6. reprefents the feven fatellites of Saturn, 
as they were fituated October a 8, at 21 h. 22" 45". The 
fmall ftar s ferved to lhew the motion of the planet in a fti ik- 
ing manner; as, in about 3 1 hours after the above-mentioned 
time, the whole Saturnian fyftem was completely moved away, 
fo as to leave the ftar s as much following the fecond and firft. 
fatellites, which then were in conjunction, as it now was before 
the fecond. . 
By comparing together many obfervations of the fixth latel- 
lite, I find, that it completes a fidereal revolution about Sa- 
turn in one day, 8 hours, 53' 9" And if we fuppofe, with M. 
DE LA Lande *, that the fourth is at the mean diftance of 3 
from the center of Saturn, and performs one revolution m 
1 5 d. 22 h. 34' 38", we find the diftance of the fixth, by 
Kepler’s law, to be 35", 058. Its light is confiderably ftrong, 
but not equal to that of the firft fatellite, loi, on the 20th of 
* Alh*. § 2996, 2997. 
C z 
October, 
