The Paralla<aick Intervalls Aug- 
menred. 
The next laft Emerfions and 
paffing the Axisofche fhadovv 
luly. 
2. 22. 
If 22. 02. 
rj. 09. 19. 
'5- 17« 
i in e of Uii paiiing tiic vilible 
Axis of Jupiter 
The time propofed. 
ii' OB- 53- 
itf. 10. OO' 
^5- 17. n- 
1(5. lo. 00, 
If. 04. 09. 
I^. 10. 00 
15. 05. 52 
16, lo. 0:5. 
Therefore Diftanccs fromjupi- 
ters Axis. 
I • 2-7' 
^ Semid. 
^^dest. 
^ Sinif. 
I. 0 . 5 1. 
I2| Sin. 
I 0 
r. 04. 00. 
loj. Sin. 
And the Satellits ftand at the two propofed times 
as in the two Figures. 
In drawing of which, tho' I have confidered their La- 
titudes from the line of their utmoft Elongations palEng 
through^' center, yet I give no rules for determining 
it, the contrivances and directions neceffary on that 
account, being too many and troubiefome to be infert- 
ed here : my defign is only to fhew the Ingenuous 
obferver, how to find at what diilancefrom'5^, each Sa- 
tellit appears, that fo he may not miftake one for a- 
iiother when he is to obferve any of their Eclipfes, But 
thus much Ifhall advile him, That from the beginning 
of the year 16^6. for 3 years following, the Satellits, 
in the upper or remoter Semi- Circles of their Orbits 
from us, have South Latitude from the line of their 
utmoft Elongations, paffing over center; in the un- 
der or nearer North, but continually decreafing till 
the end of 3 years, when they change for the contra- 
ry. That the Latitude of the 4th Satellit is never 
more then li Semidiameter of of the 3"^ little more 
then half as much, otthe two innermoft ftilllels. And 
that towards the end of the year, the 4th Satellit 
('which will then havepalTed uneclipfed near two yearsj 
will begin to fall into the Penumbra again, for which 
reafon he may doe well to attend its tranfits at its 
firft appearing, leaft perhaps it be really Eclipfed. 
The Obfervatory^Novcmb. 17. 16%^. 
V V v 2 J J(f- 
