ON THE BEARING OF LINES 
47 
TABLE GIVING SECULAR CHANGE OF THE MAGNETIC DECLINA¬ 
TION IN THE UNITED STATES 
(From U. S. Coast and Geodetic Survey Reports) 
Year 
(Jan. 1) 
Washington 
D.C. 
Maryland 
(Baltimore) 
Virginia 
East 
(Richmond) 
Virginia 
West 
(Lynchburg) 
West 
Virginia 
(Charleston) 
North Caro¬ 
lina East 
(Newbern) 
North Caro¬ 
lina West 
(Salisbury) 
O / 
O t 
O / 
O / 
o / 
O / 
O / 
1750 
1 41W 
3 05W 
1 13W 
0 18W 
1 31E 
1760 
1 02 
2 26 
0 37 
0 08E 
0 18E 
2 08 
1770 
0 28 
1 52 
0 05W 
0 42 
0 50 
2 42 
1780 
0 01W 
1 25 
0 20E 
1 11 
1 17 
3 12 
1790 
0 19E 
1 05 
0 38 
1 33 
1 45E 
1 35 
3 34 
1800 
0 28 
0 56 
0 47 
1 46 
2 02 
1 44 
3 48 
1810 
0 28 
0 56 
0 47 
1 51 
2 10 
1 44 
3 52 
1820 
0 19E 
1 05 
0 38 
1 46 
2 08 
1 35 
3 48 
1830 
0 01W 
1 25 
0 20E 
1 33 
1 58 
1 16 
3 33 
1840 
0 28 
1 52 
0 05W 
1 11 
1 38 
0 50 
3 10 
1850 
1 02 
2 26 
0 36 
0 45 
1 12 
0 17E 
2 40 
1860 
1 41 
3 05 
1 12 
0 10E 
0 38E 
0 19W 
2 06 
1870 
2 21 
3 45 
1 51 
0 29W 
0 00 
1 00 
1 29 
1880 
3 00 
4 24 
2 29 
1 09 
0 41W 
1 40 
0 51 
1890 
3 36 
5 00 
3 06 
1 46 
1 20 
2 16 
0 13E 
1900 
4 11 
5 35 
3 40 
2 20 
1 55 
2 52 
0 23W 
1910 
4 51 
6 15 
4 18 
2 53 
2 25 
3 25 
0 50 
1920 
5 29W 
6 55W 
4 52W 
3 22W 
2 50W 
3 54W 
1 13W 
Year 
(Jan.1) 
South 
Carolina 
(Columbia) 
Georgia 
(Macon) 
Florida 
East (Jack¬ 
sonville) 
Florida 
West 
(Pensacola) 
Florida 
South 
(Tampa) 
Alabama 
(Montgom¬ 
ery) 
Mississippi 
(Jackson) 
O 
/ 
O / 
O f 
O / 
O 
/ 
O / 
O / 
1750 
2 
04E 
3 16E 
2 27E 
4 35E 
5 
00E 
2 52 
1760 
2 
41 
3 53 
3 04 
5 12 
5 
30 
3 28E 
1770 
3 
15 
4 29 
3 40 
5 46 
5 
55 
4 03 
1780 
3 
44 
5 01 
4 12 
6 10 
6 
15 
4 34 
1790 
4 
06 
5 26 
4 37 
6 46 
6 
26 
5 02 
1800 
4 
19 
5 44 
4 55 
7 08 
6 
30 
5 24 
7 54E 
1810 
4 
24 
5 53 
5 04 
7 24 
6 
26 
5 39 
8 13 
1820 
4 
19 
5 53 
5 04 
7 32 
6 
15 
5 47 
8 24 
1830 
4 
06 
5 44 
4 55 
7 32. 
5 
55 
5 46 
8 28 
1840 
3 
44 
5 26 
4 37 
7 24 
5 
30 
5 38 
8 24 
1850 
3 
15 
5 01 
4 12 
7 09 
5 
00 
5 22 
8 13 
1860 
2 
41 
4 29 
3 40 
6 47 
4 
28 
5 00 
7 57 
1870 
2 
03 
3 53 
3 04 
6 18 
3 
53 
4 32 
7 31 
1880 
1 
25 
3 14 
2 25 
5 40 
3 
18 
3 54 
6 59 
1890 
0 
47 
2 39 
1 50 
5 02 
2 
48 
3 15 
6 18 
1900 
0 
12E 
2 08 
1 19 
4 37 
2 
19 
2 49 
5 55 
1910 
0 
11 
1 55 
1 05 
4 40 
2 
06 
2 45 
6 00 
1920 
0 
28W 
1 51E 
1 02E 
4 52E 
- » — 
2 
08E 
2 51E 
6 13E 
