1767 
Fcbr, 19 
T rue time 
h t n 
i6 42 41 
16 54 39 
17 5 35 
17 S 35 
17 13 34 
17 35 32 
C 458 ] 
The fliadovv of the fourth, at leaft, one of 
its own diameters from l^’s limb. 
The fhddow of the fourth looks oval, and 
touches ’s limb. 
The fliadow of the fourth quite off lf.’s 
weftern limb. 
The fourth fatellite almoft touches if-’s 
eaftern limb. 
The fourth fatellite entering on "l^’s difc, 
and forming an indentation on his 
limb. 
The fourth fatellite quite entered, but 
not fo vifible on the difc as the firft. 
The fhadow of the fourth feemed larger than that of the firft ; 
it was alfo more perceptible ; owing, perhaps, to the fliadow of 
thefirft running along the upper fide of the middle belt, which was 
darker and more confpicuous than the upper belt, where the flia- 
dow of the fourth was. It was an eafy matter to form a judg- 
ment of their differences, as the two fliadows were at the fame 
time feen on lf.’s difc. At in the morning the Iky became 
clouded, fo that the egrefs of the fourth from the difc could not 
be obferved. 
The figure n® i (Tab. XIX) reprefents T^.’s difc at the 
moment of the entry of the fliadow of the firft fatellite ; the up- 
per part was fliaded, but lefs fenfibly.than the middle belt, which 
was blackifli, and of a darker hue in fome parts than in others. 
Below this middle belt, another was vifible, which terminated at 
about two-thirds of "4 ’s diameter. It was narrow, but as di- 
ftinguiftiable as the middle belt. 
The fig. n° 2 reprefents the fliadow of the fourth fatellite, 
which paffed>along the upper belt lefs diftintff than the middle 
one. At 3^ ii' the lower narrow belt was not to be feen ; the 
middle belt was alfo altered, being of various fliades, and differ- 
ent from that reprefented in fig. i. at the time of the immerfion 
of the fliadow of the firft fatellite. 
The fig. n°3 reprefents the fliadows of the firft and fourth fa- 
tellites, viewed at the fame time. 
The fig. n°4 reprefents If ’s belts: the upper belt was the 
fame as in fig. n° i ; the middle belt was likewife the fame ; 
the 
