, ( 177 > 
AiiT. XXIX. — Account of Mr Oxley’s Observations oh the 
Variation of the Needle^ ^c. in New Holland, 
The great value which is now attached to accurate measures 
of the variation of the needle, particularly when made in coun- 
tries remote, and almost inaccessible to ordinary travellers, has 
induced us to collect all the magnetical observations which are 
scattered through Mr Oxley’s Journals of Two expeditions in- 
to the interior of New South Wales, which has just been pub- 
lished. We have compared the observations in the text with 
those engraved on the chart, and have thus been enabled to' 
correct some typographical errors in the measures, and to add 
the longitude and latitude where they had been omitted — D. B; 
First Expedition in 1817. 
South East Easterly 
Latitude, Longitude. Variation. 
as® 
40' 
0' 
o 
00 
J— < 
21' 
0' 
April 
27. 
7^ 
>47' 
0" 
15 
34 
147 
16 
6 
May 
16. 
7 
0 
8 
S4 
8 
8 
146 
3 
0 
June] 
2. 
7 
18 
0 
34 
11 
0 
145 
53 
0 
June 
4. 
7 
44 
0 
34 
13 
33 
146 
0 
0 
June 
5. 
8 
0 
8 
33 
24 
0 
145 
46 
0 
June 
22. 
7 
45 
0 
33 
22 
0 
145 
24 
15 
June 
27. 
7 
30 
0 
33 
22 
22 
145 
5 
50 
July 
1. 
6 
49 
0 
33 
53 
19 
144 
33 
50 
July 
8. 
7 
25 
0 
July 
l6. 
7 
47 
0 
33 
14 
0 
146 
7 
0 
July 
23. 
7 
51 
0 
33 
4 
2 
146 
31 
50 
Aug. 
L 
7 
23 
0 
32 
47 
58 
147 
23 
0 
Aug. 
8. 
5 
20 
0; 
32 
44 
29 
147 
46 
30 
Aug. 
11. 
7 
18 
0 
32 
32 
45 
148 
51 
30 
Aug. 
20. 
8 
38 
38 
33 
27 
0 
149 
28 
0 
fiATHtTRST, 
8 
40 
0 
* Captain Cook found the Variation at Botany Bay on the 6th May 1770, to 
be 8“ east, and the Dip to be 67° south; Hansteen uses these measures in his 
charts of the variation and dip. In Churchill’s Magnetic Chart, the variation Js 
fnade about 3° pr 4°. 
•j* The Variation is 6° 11^ on the chart. 
J There seems to be an error in this measure. As it occurs both in the chart 
and in the text, the smallness of the variation probably arises from local attract" 
tion, as afterwards happened at Loadstone Hill, 
VOL. IV. NO. 7. JANUARY 1821. M: 
