PHILOSOPHICAL TRANSACTIONS 
Astronomical Observations made at the Observatory at Paramatta in New South 
Wales. By Charles Rumker, Esq. Astronomer. 
I. Magnetic Observations made at Paramatta. 
Variation of the Needle observed with Dollond’s Magnetic Transit. 
Day of the 
Month. 
Magnetic Me- 
ridian. 
True Me- 
ridian. 
Variation of 
the Needle. 
Observations made after reversing 
ment 180° in Azimuth. 
the instru- 
1822. 
o 
/ 
// 
o 
/ 
// 
o 
/ 
// 
Day of the 
Magnetic Me- 
True Me- 
Variation of 
Oct. 23 
282 
24 
30 
273 
40 
40 
8 
43 
50 
Month. 
ridian. 
ridian. 
the Needle. 
1823. 
1823. 
o / // 
or// 
O / //„ 
Feb. 10 
99 
29 
7 
99 
42 
20 
99 
46 47 
May 7 
102 18 13 
93 28 37 
8 49 36 
12 
99 
29 
20 
99 
46 
20 
99 
43 
0 
10 
„ 27 o 
„ 28 50 
„ 57 40 
13 
99 
30 
15 
99 
54 
20 
99 
36 
0 
31 
„ 18 30 
„ 28 50 
„ 50 40 
14 
99 
24 
20 
99 
50 
20 
99 
34 
0 
15 
99 
28 
10 
99 
50 
20 
99 
37 50 
Mean for May after Reversion . . 
8 52 39 
Mean for March before Reversion . 
8 42 43 
17 
99 
26 
40 
99 
51 
41 
99 
35 
0 
March 2 
99 
18 
23 
99 
46 
17 
99 
32 
6 
Variation, April 1823 . 
8 47 41 
10 
99 
36 
40 
99 
45 
10 
99 
51 
30 
14 
99 
24 
20 
99 
47 
8 
99 
37 
12 
19 
99 
24 
33 
99 
45 
55 
99 
38 
38 
20 
99 
25 
7 
99 
45 
0 
99 
40 
7 
21 
99 
37 
0 
99 
43 
20 
99 
53 
40 
22 
99 
20 
10 
99 
40 
20 
99 
39 
50 
26 
99 
32 
17 
99 
45 
45 
99 
46 
32 
27 
99 
30 
40 
99 
40 
7 
99 
50 
33 
31 
99 
21 
50 
99 
38 
23 
99 
43 27 
April 19 
99 
20 
30 
99 
33 
27 
99 
47 
3 
May 3 
99 
16 
55 
99 
35 
0 
99 
41 
55 
9 
99 
20 
7 
99 
34 
0 
99 
46 
7 
June 14 
99 
25 
43 
99 
34 
7 
99 
51 
36 
Mean for March 1823 
8 
42 
43 
MDCCCXXIX. b 
