332 
LITTLEHALES. 
Lat. 1° 18' N. SINGAPORE. Long. 103° 51' E. 
Year. 
Magnetic 
dip or in¬ 
clination. 
Authority. 
Observer. 
Where recorded. 
1837. 
o 
—12.48 
Phil. Trans. Royal Society, 1875. 
1841. 
—12.72 
Cant. C. M. Bilint. . 
Magnetic Observations at Singapore. 
1842 
—12.70 
Do. 
1843 
—12.68 
Do. 
1844 
—12.65 
Do. 
1845.2 .... 
—12.70 
Do. 
1846. 
—12.92 
.do. 
Phil. Trans. Royal Society, 1875. 
1848. 
—12.97 
Magnetic Observations at Singapore. 
1853 
—13.20 
“ T.’Bno-p.nip. ” ... 
Annalen der Hydrographie, 1877. 
1874.2 .... 
—13.25 
Shadwell.., 
Phil. Trans. Royal Society, 1877. 
1875.1 .... 
—13.33 
.do.. 
Do. 
1876^.. 
—13.11 
Van Riiekpvnrspl.. 
Trans. Royal Academv of Sciences, Amsterdam, 
1880. 
1890.5 .... 
—14.45 
“ Dubourdieu ”. 
Letter from British Hydrographer, dated Decem¬ 
ber 13, 1896. 
Year. 
Observed. 
Computed. 
O-C. 
o-c 2 . 
1837. 
o 
—12.48 
o 
—12.74 
-1-0.26 
0.0676 
1841. 
—12.72 
—12.73 
+0.01 
0.0001 
1842. 
—12.70 
—12.73 
+0.03 
0.0009 
1843. 
—12.68 
—12.73 
+0.05 
0.0025 
1844. 
—12.65 
—12.73 
+0.08 
0.0064 
1845.2 .... 
—12.70 
—12.74 
+0.04 
0.0016 
1846. 
—12.92 
—12.75 
—0.17 
0.0289 
■ Probable error of a single observation = ± 9'. 
1848. 
—12.97 
—12.76 
—0.21 
0.0441 
1853. 
—13.20 
—12.82 
—0.38 
0.1444 
1874.2 .... 
—13.25 
—13.40 
+0.15 
0.0225 
1875.1 .... 
—13.33 
—13.43 
+0.10 
0.0100 
1876. 
—13.11 
—13.47 
+0.36 
0.1296 
1890.5 .... 
—14.45 
—14.19 
—0.26 
0.0676 
. 
0.5261 
Empirical equation for determining the inclination for any year: I — — 12°.78 
— 0.0111 {t — 1850) — 0.000587 (« — 1850) 2 . 
