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—— 
DEsCRIPTION-OF FHE PLATE. 
We have been tempted by the beautiful and accurate chee of the annexed Plate, to reprefent it to 
he P yy. a 
our readers, for although it bas already appeared in 
the Philfophical Tranfa@ions, yet, as thee 
quork bas a very limited circulation, the plate will fill be new and curious to @ large proportior, 
of our readers. 
Objervations of a quintuple Belt on the, Planet 
. Saturn. By WILLiaM Herscter, LL.D. 
FR. S. 
5 Dalene analogy that can be traced in the 
4 appearance ci the planets, feems to throw 
fome additional light on what we know of 
_ them already. 
} have eftablifhed the {pherodical form of the 
planet Saturn, and po'nted out the motion of 
a fpot on its difk. From the firft of thefe 
may beinferred a confiderable rotation on its 
axis; while the latter goesa ftep further, and 
thews that it has fucha motion. My late ob- 
férvations feem to hint to us, that the period 
in which it revolycs is, probably, not of a 
long duration. ais aa 
~ ‘They are as follows: 
Nov. 11, 1793. 38. 
power 237. 
Clofe to the ring of Saturn, where it pafles 
acrgfs the bady of the planet, is the fhadow 
of the rings: very narrow and black. See 
Hg. I NS AR ee Ry Gi 
°95/, 7~feet reflecor, 
In fome of my former papers- 
s 
u. andere. Ner-. 
Immediately fouth of the fhadow is a bright, — 
uniform, and broad belt. a boviis 
Clofe to this bright belt, is a broad, darker 
belt; which is divided by two narrow, white 
ftreaks ; fo that by this means, jt becomes to 
be five belts; namejy, three dark, and two 
bright ones; the colour of the dark belt is 
yellowish. : : 
The fpace from the quintuple. belt towards 
the fouth pole of the planet which is in view, 
is of a pale, whitith colours lefs bright than 
the white equatorial belt, and muych lefs fo 
than the ring: ©. a 
The globular form of Saturn is very vifible, 
fo that it has by mo means the appearance of 
a fiat dik. Resa gee 
Nov. 133 3h. 30% The quintuple belt oa 
Saturn is ag it was Nov. 13, I faw it three 
hours ago, and feyera] times fince, without 
any vifible change. — i th 
Nov. 19, 3h. 14’. The fouthern belt of 
Saturn is ftill divided into five, The gvening js 
; tans Ags 
ma 
ae 
