^2 Dr. Herschel’s Obfervations on the 
fatellite, which moves fo rapidly that, at firft light, we might 
think thole fituations favourable. 
The mean motion of the five old fatellites, as being Suffi- 
ciently accurate for my prefent purpofe, I have taken from 
the above-mentioned tables of M. de la Lande; and thofe 
of the 6th and yth, of courfe, are the relult ot my own 
obfervations. . 
The geocentric place of Saturn, whofe complement is to be 
added, in order to reduce the Saturnicentric iituation of the 
fatellites to the apparent one, I have taken from the nautical 
almanac to the neareft minute ; and, as 1 have always con ne 
myfelf to a literal tranfcription of the obfervations from the 
original journal, all the memorandums which are neceffary 
either to explain them, or to correft miftakes in the names of 
the fatellites, are thrown into notes, that there may be no inter- 
ruption in the fucceffion of the obfervations. 
Obfervations on the fifth fatellite of Saturn. 
1789’ July 18. 20 h. 20' (A). The fuppofed fifth fatel- 
lite (B) 6° or 7 0 f P . (C) the ring (D). Ju , y 
, A) The time of my obfervations being fidereal, it is neceffary to mention, 
that this relates only to the hours, minutes, and feconds, the day itfelf being 
that which is generally ufed by ahronomers, beginning at noon, and ending I he 
. noon following. By this means there can never be a m.ftake whtch ftdereal hou 
I mean to point out, as no two fuch hours can occur in the fame aftronom.cal 
"twill alfo be neceffary to remark, that all the times are thofe (hewn by the 
clock ; which, by equal altitudes, has been found to lofe very equally at the ra 
of o" 4 Per day ; and to be 8' 51 ", 5 too faff at midnight the iSth ot Joiy, 
i 7 8 9 , which is the time on which my obfervattons on Saturn commenced 
fB The fatellite itfelf not being known, it is here called the fuppofed fifth. 
(C) By fix or fovea degrees fouth preceding the line of the ring, is mean^. 
