[ ] 
Tranfit of Venus by Dr. Solander, with a 9 feet refle£ting 
tclefcope. 
Timepei 
clock 
h ' >' 
9 22 II 
9 39 33 
9 40 07 
3 27 5 ^ 
3 28 15 
Firft external contadt plainly convex, a 
wavering haze feen fome feconds before 
Ingrefs, light feen glimmering under Venus 
? ’s free from the O ’s limb 
? *s true limb out 
g ’s atmofphere out 
App. time 
21 42 28 
21 44 2 
3 3 * 49 
3 32 13 
Obfervations of the Tranfit of Venus, made by Mr. Charles 
Green, with Dollond’s micrometer fitted to a refledling tele- 
fcope of 2 feet focus. 
June 2 1769. 
In. 
pts. 
ver. 
In. 
pts. 
ver. 
0 
10 
24' 
1 
0 
10 
5 ) 
0 
10 
24 
' Venus’s di- 
0 
10 
/ Venus’s di- 
0 
10 
24/ 
^ ameter mea- 
0 
10 
42 I ameter mea- 
0 
15 
^ fured off the 
0 
10 
4 r fured on the 
0 
10 
24 
i fcale. 
0 
10 
4 1 fcale. 
0 
10 
24 1 
0 
10 
5 \ 
0 
10 
24. 
1 
0 
10 
4 J 
Meano IQ 24,14 Mean o 10 4,50 
Half the difference of thefetwo means is + 9,82 ver. = + 8,4'' 
the correction of the adjuftment of the micrometer to be added 
to all obfervations made on the fcale ; and half the fum of the 
two means is 10 pts. 14,31 ver. zz 54,97" Venus’s apparent 
diameter. 
After the above meafurements of Venus’ diameter, I fixed my 
telefcope on an equatoreal ftand, which was ferewed down to a 
large calk filled with fand and water ; and by repeated trials a 
day before, an objeCl (as the fun) would move on along the wire 
a quarter of an hour without any fenfible difference. Thus 
equipped, I took the following obfervations, a careful perfon 
noting the time by the clock and another writing down. By re- 
peated 
