(682) 
mthJufUer^ have alfo the Meridional Latitude in refpedV of his 
center, zsjufiter hath^fince the month of March^in refpeft of the E- 
eliptique. 
The contrariety of latitude between one Sacellit, being in the 
fuperior part of his circle, and another being in the inferior part 
of his,is more fenfible in the encounter of a Dircft, which is always 
fuperior, with a Retrograde, which is always inferior, and parti- 
cularly near to jAf/z/^r. 
Signor Cjj^;?i forefees, i. That, at theendof March next, the 
Satellites will no more have any latitude in refped of Jupiter's cen- 
ter, and that they will appear in a ftreighc line in all their configu- 
rations between ihemfelves and with jf»/^/>^;', and will eclipfe one 
another : which,according to Gakl^ofiiould have come to pafs ever 
fince the firft months of this prefent year, when Jupiter paffcd fronr 
the North-fide to that of the South, and not the next year , when 
Jupiter will have a great Southern latitude. 2. That the ftreighc 
lineof the Satellites will be inclined rothe Ecliptique,contrary to 
the Galium Hy pothefis. 3. That this difpofition of the Satellites 
sn a ftreight line in their encounter will laft but a few days , though 
GaliUo affure us that it lafe many months. 4. That the next Sum- 
mer the fcituation of thecirclesof the Satellites will be found in- 
verted, in refpeft of that which they have now ; for, the fuperior 
Semi-circlcSj which at prefent are turned to the South, will then be 
mraed to the North which will overthrow the Hyporhefes ofMa^ 
yiHS'ZV\d liodiermy who fuppofe them always turned the fame w^y^ 
Thefe Obfcrvations will ferve to verifie the Nodes of the Orbe* 
of the Satellites with the Orbof J^^p//^r, and the Obliquity of the 
one to the others ; which are the two Keys to the Theory of the 
Satellites. Signor Cajji^gi fettles thefe Nodes towards the thirteenth^ 
degree of Leo^ and Aquariti^ 5 but GaliUo fuppoled them always ta 
be with the Nodes of Jupiter 9 which are towards the beginning of 
Cancer zv\A Capricorn, He finds the Obliquity of their circles to 
theorbiteof J^/^^Vrr almoft double tp the obliquity of this orbite 
to thoEcliptique; whereas G^///<g^? fuppofes it equal. 
Laftly, he {Caffim) retrafis the motion, which he introduced 
10 the Nudes of the SatellitesCfuch as is defcribed at the end of his 
firft Tables/only to reconcile the Obfervations of CaliUimth his, 
arid he acknowledges, that the obliquity of their circles is perma- 
nent. 
The goodnefs of Signor Ga^nfs Syftem^ and the imperfcflion of 
•he Hyporhefesof G^///^/ are demooft rated by the Eclipfes of the 
Satellites. 
