AT THE OBSERVATORY AT PARAMATTA 
45 
The mean of all the observations derived from the upper limb is 66° 32' 15".98, 
from the lower limb 66° 32' 18".215, the mean of the two is 66° 32' 17".096, 
which gives for obliquity 23° 27' 43". 162; this is probably the most correct way 
to proceed. From these observations it appears that I observe the Sun’s ap- 
parent diameter too great. 
Northern Solstice, June 1828. 
1828. 
Limb. 
Barom. 
Ther.l 
Observed South 
Polar Distance. 
Refract. 
Parallax. 
Semidia- 
meter. 
Reduction to 
Solstice. 
Corr. for 
Sun’s Lat. 
Apparent Ob- 
liquity of 
Ecliptic. 
inches. 
O 
O 
, 
n 
// 
/ 
// 
O 
/ 
// 
// 
June 2 
u 
30.03 
59 
111 
53 
10.9 
1 
16.82 
15 
47.5 
1 
17 
13.7 
— 0.82 
23 
27 
27-58 
4 
u 
29.90 
58 
112 
8 
6.5 
99 
17.14 
99 
47-1 
1 
2 
17.3 
0.77 
99 
99 
37-2 
6 
L 
29.76 
57 
99 
53 
12.55 
99 
19-44 
99 
46.95 
0 
48 
54.6 
0.57 
99 
99 
38.4 
7 
L 
29-49 
58.2 
99 
59 
16.3 
99 
18.79 
99 
46.8 
99 
42 
48.9 
0.3 
99 
99 
36.89 
9 
L 
29.47 
62 
113 
10 
14.4 
99 
18.67 
99 
46.7 
99 
31 
48.8 
0.17 
99 
99 
35.0 
10 
L 
29.75 
56 
99 
15 
6.5 
99 
20.90 
99 
46.55 
99 
26 
55.1 
-0.0 
99 
99 
39.55 
11 
U 
29.71 
56 
112 
48 
0.3 
99 
19-15 
99 
46.42 
99 
22 
25.5 
+ 0.17 
99 
31.54 
13 
u 
30.06 
50 
99 
55 
51.7 
99 
21.71 
99 
46.30 
99 
14 
39-65 
0.31 
99 
99 
39.66 
14 
L 
29.99 
57-3 
113 
30 
37.7 
99 
22.19 
99 
46.22 
99 
11 
23.59 
0.42 
99 
99 
37.26 
15 
L 
29.65 
70 
99 
33 
28.0 
99 
18.86 
99 
46.13 
99 
8 
31.9 
0.49 
99 
99 
33.12 
16 
U 
29.69 
66.5 
99 
4 
22.6 
99 
18.17 
99 
46.05 
99 
6 
5.04 
+ 0.53 
99 
99 
32.39 
17 
L 
30.05 
60 
99 
37 53.1 
99 
22.29 
99 
45.97 
99 
4 
2.95 
0.50 
99 
99 
32.87 
18 
L 
30.18 
56.5 
99 
39 
37.45 
99 
23.74 
99 
45.88 
99 
2 
25.57 
0.49 
99 
99 
41.37 
19 
U 
30.35 
58.2 
99 
9 
8.5 
99 
21.97 
99 
45.8 
99 
1 
12.98 
0.43 
99 
99 
29.71 
20 
U 
29.295 
58 
99 
9 
58.7 
99 
21.85 
99 
45.8 
99 
0 
25.21 
0.28 
99 
99 
31.84 
21 
L 
30.27 
60 
99 
41 
51.3 
99 
23.12 
99 
45.7 
99 
0 
2.25 
+ 0.16 
99 
99 
31.13 
22 
U 
30.23 
65.5 
99 
10 
19.1 
99 
20.31 
99 
45.7 
99 
0 
4.08 
0.04 
99 
99 
29-23 
23 
L 
30.18 
70 
99 
41 
26.65 
99 
21.13 
99 
45.6 
99 
0 
30.72 
— 0.08 
99 
99 
32.82 
25 
U 
30.25 
58.3 
99 
7 38.6 
99 
21.49 
99 
45.6 
99 
2 
38.23 
0.38 
99 
99 
23.54 
26 
L 
30.22 
61.5 
99 
37 37-15 
99 
22.99 
99 
45.6 
99 
4 
18.92 
0.53 
99 
99 
32.93 
28 
L 
30.27 
62.5 
99 
32 59 
99 
22.69 
99 
45.6 
99 
8 
53.24 
— 0.75 
99 
99 
28.58 
29 
L 
30.15 
66 
99 
30 
7.4 
99 
21.14 
99 
45.5 
99 
11 
49.12 
0.81 
99 
' 99 
31.35 
30 
U 
30.13 
58 
112 
55 
20.6 
99 
20.48 
99 
45.5 
99 
15 
18.12 
0.83 
99 
99 
33.87 
July 2 
U 
29.86 
61 
99 
47 29 
99 
18.66 
99 
45.5 
99 
22 
59.4 
0.73 
99 
99 
31.83 
4 
L 
29-82 
54.5 
113 
9 
32.15 
99 
21.00 
99 
45.5 
99 
32 27.2 
0.52 
99 
99 
34.23 
5 
U 
30.14 
57 
112 
32 
42.8 
99 
19.37 
99 
45.5 
99 
37 47.0 
— 0.31 
99 
99 
34.36 
6 
U 
30.25 
57 
9 > 
27 
0.7 
99 
19.49 
99 
45.6 
99 
43 
31.0 
0.15 
99 
99 
36.65 
7 
U 
30.01 
55.5 
» 
20 
52.8 
99 
18.74 
99 
45.6 
99 
49 
38.7 
-0.00 
99 
99 
35.8 
Mean by upper limbs 
Mean by lower limbs 
Mean of centre 
Luni-solar nutat. and reduct, to Jan. 1, 1828 . , 
Mean obliquity, Jan. 1, 1828 
23 27 32.37 
27 34.71 
23 27 33.54 
+ 9-5 
23 27 43 04 
