( m) 
they pleafe, and the weight of the Via! full 'of water taken ex* 
aftly at every time, and recorded, marking whbaH the degree 
of Latitude , and the day of the Month ; And that as well of 
- water near the Top b as at a greater Depth. 
Some Obfervations concerning Jupiter, Of the pa- 
dorp of one of his Satellites feen 0 by a Tele f cope 
puffing over the Body of Jupiter. 
I have received an Account from very good hands, That 
on the 26*. of September \&fk, at half hour after feven of the 
Clock, was feen, both in Holla nd and i n France (by curious 
Obfervers, with very good Tekfcopes) the fhajgow of one 
of the Satellites of Jupiter , paffing over his Body. One of 
ihofefmall Stars moving about his Body ( which are there- 
fore called his Satellites ) coming between the Sun audit, 
spade a fmall Eclipfe, appearing in the Face of Jupiter as a 
little round black Spof. The Particulars of thofeObferva- 
iions, when they flaall come to our Hands, we may (if need 
Jbej make them publik : Which Obfervations, as they are 
in themfelves very remarkable, and argue the Excellency of 
theGialTes by which they were difcovcred 5 So are we 5 in 
part, beholding to Moofieur Cajfim for them, who giving 
notice before' hand of fuch Appearances to be ex;pe$:ed,gav© 
occafion to thofe Curious Obfervers to look for them. 
Of a permanent Spot in Jupiter : by which k wank 
fefted the converfion of Jupiter about hk own Axis . 
Befides that Tranfient Shadow lafl: mentioned, there hath 
been obferved, by Mr. Hook^R rft (as is mentioned in Numb, i» 
oft kefeTr 4 »f*&.) andfinceby M. Cajfini^ a permanent Spot 
in the Difsjue of Jupiter^ by the help whereof^they hive been 
able to obferve- not onely that Jupiter turns about upon his 
own Axis? but alfo the Time of fuch converfion ; which he 
eftimatfi ■ 
