[ 281 ] 
the planet prefently became diftinCt, and her limb 
well defined. Upon this, I applyed myfelf to ob- 
ferve the paffage of the Sun’s and Venus’s preceding 
limbs, by the vertical, and of their lower limbs by 
the horizontal, wires in the refleCtor, and made the 
following obfervations ; one of my alliftants counting 
the clock, and the other writing down the obferva- 
tions as I made them ; which, having made the pro- 
per correction of the time for the change of the Sun’s 
declination, Hand as follows. 
True time. 
' h 
j n 
At 4 21 20 Sun at the vertical 
31 Venus at the fame 
23 6 Venus at the horizontal - 
24. 23 Sun at the fame. - 
27 29 Venus at the horizontal — 
28 47 Sun at the fame 
35 15 Sun at the vertical — — 
21 Venus at the fame 
37 49 Venus at the horizontal - 
39 9 Sun at the fame 
diff. long. 
o&? 
g Lat, South. 
/ 
// 
/ 
Jt 
10 
47 
9 
2 
9 
4 
10 
50 
9 
25 
10 
52 
10 
55 
9 
56 
1.0 
8 
II 
00 
„ As Venus began now to draw near the Sun’s limb, 
I prepared to obferve her egrefs. The interior con- 
tact did not appear fo perfectly inftantaneous, as Dr„ 
Halley’s papers led me to expeCt. I was not certain 
of it till 4 11 47' 21/ , though I doubted of it at ij". 
The exterior contaCt I judged to be at 5 h 5' 49", 
doubtful alfo 3 or 4 " ; and fo the paffage of Venus’s 
diameter, 18' 28 // . 
The above obfervations gave me feveral altitudes and 
azimuths of Venus, from whence I deduced her 
Vol. LIV. O o right. 
