. { po' ) 
the Shade ought to have done by our Computation ; 
but not imagining that this dark Spot could be any 
thing die but the Shade, we concluded there had 
been feme Error in the Calculation, which we thought 
to re examine afterwards. On this prefumption we 
left off obferving till 9’’. 35'. at which time we were 
furprized to fee a Notch in the Limb of Jupiter, near 
the place where the former Spot entred. This laft ap- 
pearance agreeing well with the time that the Shade 
of the Satellite ought to have entred the Difque, 
foon made us alter our former Opinion, and conje- 
dure that this and not the other Spot was the faid. 
Shade. At 9^. 39^7 T, the Notch vanilhing, a 
round black Spot appeared within the Limb, but in 
conrad with it. At 9^ 4^'. we judged the firft Spot, 
and at ii^ 45’. the fecond, to be in the middle of Jupi- 
ter. 
At ii\ 50'. the firft Spot touched the Limb, being 
within the Difque ; foon after which the Limb in that 
place Teem’d a little protuberant- At iz*". 5'. appear- 
ed the fourth Satellite juft come out of the Diique, 
and touching the Limb in the place where the Fro- 
tuberancy was. At lx’"- 7', we could perceive the 
Satellite feparated from the Limb. At 13'’. 56'. the 
fecond black Spoti ftill within the Difque, juft touched* 
the Wejhrn Limb ; foon after which there appeared a 
Notch in this part of the Limb, as it did on the o- 
ther at the coming on of this Spot, At I4^ 6 '. the 
Spot was all gone off, and the Limb appeared clear 
and entire.. The firft Spot, when in the middle of 
piter, was almoft as black, as the fecond when near., 
the Limb, but fomewhat lefs and a little more Nor- 
therly. 
Atithe time that the firft: Spot was in the middle 
of the Difque, the three inneimoft Satellites appeared 
