on the Planet Saturn . i y 
lime 19, 20, and 2T, zy So, where the fame fpot was feen In 
three different fltuations, would remove It completely. 
There is another argument, of equal validity with the for- 
mer, which now I fhall bring on. It is founded upon the fol- 
lowing ohfervations, and will fhew that Saturn, like Jupiter, 
Mars, and the Earth, is flattened at the Poles ; and therefore 
ought to be fuppofed to turn on its axis. 
July 22, 1776. I thought Saturn was not exadtly round. 
Mav 31, 1781. It appears as if the body of Saturn was at 
leaft as much flattened as that of Jupiter; but as 
the ring interferes, this may be better afcertained 
eight years hence. 
Auguft 18, 1787. The body of Saturn is of unequal diame- 
ters, the equatorial one being the longeft. 
Sept. 14, 1789, 23 h. 36' 32". Having referved the exami- 
nation of the two diameters of Saturn to the pre- 
fent as the moil: favourable time, Imeafured them 
with my twenty-feet refledtor, and a good parallel- 
wire micrometer. 
t) 
Equatorial diameter, 1 ft meafure, 21,94 
2d • • * 23,1 1 
3 d . . . 21,73 
4th . . 22,85 
H 
Mean 22,81 
Polar diameter, I ft meafure, 20,57 
2d . . . 20,10 
3d . . . 21,16 
Mean 20,6s 
d % 
Vol. LXXX. 
1 
