m 
Account ofMv Oxley’s Observations 
Second Expedition in 1818. 
South 
East 
Easterly 
Latitude. 
Longitude. 
Variation. 
31° 
49' 005" 
147° 52' 15" 
June 21. 
8° 22' 
31 
18 
0 
147° 31 0 
July 20. 
7 48 
31 
14 
14 
148 18 0 
Aug. 2. 
8 14 
31 
13 
30 
148 38 0 
Aug. 7. 
6 22* 
31 
13 
0 
148 41 30 
Aug. 9. 
7 1 
30 
57 
0 
149 20 0 
Aug. 23. 
8 42 
31 
4 
35 
151 5 30 
Sept. 6. 
9 58 
31 
1 
1 
15i 26 1 
Sept. 8. 
8 51t 
31 
19 
0 
151 49 1 
Sept. 20. 
10 39 i 
31 
23 
10 
152 8 0 
Sept. 27. 
8 22 
31 
24 
0 
152 51 J 
Pout Macquarrie, 
10 5 
31 
25 
45 
151 53 54 
Ditto, 
10 11 II 
31 
38 
0 
152 48 0 
Oct. 13. 
9 33 
On 
ascending 
Mount Exmouth, Mr Oxley was surprised 
with the remarkable effect which was produced upon the com- 
pass. On the highest part of the hill, near its centre, he pla- 
ced the compass before him on the rock, and the card flew 
round with extreme velocity, and then suddenly settled at op- 
posite points, the north point becoming the south. Astonished 
at this phenomenon, he made the following observations : ‘‘ The 
compass on the rock Mount Exmouth bore S. 60° W. (its true 
bearing being N. 75° E.) and on raising it gradually to the 
eye, the card was violently agitated, and the same point now 
bore N. 67° E. About 100 yards farther south, the compass 
was again placed on the rock ; the effect on the compass was 
very different. Mount Exmouth bore E. 48° S., and the tent in 
the valley beneath S. 74° W. The card, on raising the com- 
pasSj was rather less agitated than before, and from the eye 
Mount Exmouth bore N. 77° E., and the tent S. 15° W., the 
* This observation was made at Loadstone Hill, the effects of which will be 
presently described. 
-j- The variation is 9° 51' E. in the chart. 
J The variation is 10° 40' in the chart. 
11 The high water full and change is here 8*^ 43', and the rise of tide from four 
to five feet. 
