334 
LITTLEHALES. 
Lat. 33° 52' 8. SYDNEY. Long. 151° 12' E. 
Year. 
Magnetic 
dip or in¬ 
clination. 
Authority. 
Observer. 
Where recorded. 
1793.2 .... 
o 
—60.01 
Malaspina. 
Bode’s Astronomisches Jahrbuch, 1828. 
1824. 
—62.31 
Duperrey. 
Phil. Trans. Royal Society, Part II, 1877. 
f—62.88. Bethane. 1831. 
Do. 
1831. 
—62.86 
< 
—62.85, Dunlop, 1831. 
Do. 
f—62.82, Fitz Roy, 1836. 
Do. 
1837. 
—62.82 
-j —62.80, Anonymous, 1837... 
Do. 
[—62.85, Wickham 
1838. 
Do. 
f r—62.98, H.M.S. Terror, 1841. 
Do. 
—62.80. H.M.S. Erebus. 1841 
Do. 
1841. 
—62.84 
—62.87, H.M.S. Terror, 1841. 
Do. 
[—62.70, H.M.S. Erebus, 1841 
Do. 
r—62.62, H.M.S. Fly, 1842. 
Do. 
1844. 
—62.63 
j —62.75, H.M.S. Flv, 1844. 
Do. 
[—62.52, H.M.S. Fly, 1845. 
Do. 
1849. 
—62.73 
H. M. S. Rattlesnake. 
Do. 
1852. 
—62.73 
Kerr. 
Do. 
1858 
—62.68 
_62.66 
Novara Expedition. 
Do. 
Ohsp.rva.tnrv_ 
Letter dated July 6,1896, from H. C. Russell, Esq., 
B. A., Government Astronomer, Sydney Ob¬ 
\ 
servatory. 
1874.4.... 
—62.76 
H. M. S. Challenger. 
Voyage of H. M. S. Challenger. 
1890.8 .... 
—62.97 
Lieut. Courmes, Fr. N. 
Annales Hydrographiques, 2d series, 2d vol., 1892. 
1892. 
—62.68 
Observatory. 
Letter dated July 6,1896, from H. C. Russell, Esq., 
B. A., Government Astronomer, Sydney Ob¬ 
servatory. 
1896. 
—62.70 
.do. 
Do. 
Year. 
Observed. 
Computed. 
O-C. 
O+f. 
1793.2 .... 
o 
—60.01 
o 
—60.17 
+0.16 
0.0256 
1824. 
—62.31 
—62.11 
—0.20 
0.0400 
1831. 
—62.86 
—62.40 
—0.46 
0.2116 
1837. 
—62.82 
—62'61 
—0.21 
0.0441 
1841. 
—62.84 
—62.72 
—0.12 
0.0144 
1844.. 
—62.63 
—62.79 
+0.16 
0.0256 
1849. 
—62.73 
—62.90 
+0.17 
0.0289 
1852. 
—62.73 
—62.94 
+0.21 
0.0441 
■ Probable error of a single observation = ± 11'. 
1858. 
—62.68 
—63.00 
+0.32 
0.1024 
1865. 
—62.66 
—63.02 
+0.36 
0.1296 
1874.4 .... 
—62.76 
—62.98 
+0.22 
0.0484 
1890.8 .... 
—62.97 
—62.64 
—0.33 
0.1089 
1892. 
—62.68 
—62.62 
—0.06 
0.0036 
1896. 
—62.70 
—62.49 
—0.21 
0.0484 
J 
0.8756 
Empirical equation for determining the inclination for any year: I = —62°.97 
— 0.0165 {t — 1850) + 0.00056 («— 1850) 2 . 
