Satellites of the Georgium Sidus , See. 59 
objects, and of marking them down by lines and angles, with 
every other possible advantage for finding them again, has 
been completely understood and put in practice. So guarded 
against deceptions, we cannot but allow, that even a single 
glimpse of a very small star is a considerable argument in fa- 
vour of its existence. What I call verifying a suspicion, which 
is generalty done with a higher power than that which caused 
the suspicion, is obtaining a steadier view of the existence 
of the object in question ; that is, to see it in such a man- 
ner as to be able to fix an eye upon it, and to compare it with 
other surrounding objects ; and thus to be able to ascertain its 
relative situation with those other objects, in a satisfactory 
manner. 
An interior Satellite. 
The observation of Jan. 18, 1790, says, “ a supposed 3d satel- 
* £ lite is about two diameters of the planet following/’ There is 
not the least doubt expressed about the existence of the satellite, 
or object in question, which therefore must be looked upon as as- 
certained. Now, the angle of the greatest elongation of the Geor- 
gian satellites, by my new tables, at the time of observation, was 
^ 1 °33 / N.F. Therefore, the angle of the apogee was 8° 27' S.F. ; 
and since, by observation, the satellite was “ following,” without 
any mention of degrees being made, we may admit it to have 
been not far from the parallel ; suppose 1 1 or 12 degrees S.F. In 
this case, the satellite would be in the apogee about the time of 
the 2d observation, at 7 h 57 ; ’ which says, “ I cannot perceive 
the satellite.” But it will be shewn hereafter, when I come to 
treat of the vanishing of the satellites, that it would become 
invisible in this situation. Indeed, without the supposition of 
I 2 
