OBSERVATIONS OF THE MAGNETIC INCLINATION 
331 
Table LI. (Continued.) 
Station. 
Lat. 
Long. 
Year. 
Observer. 
Inclination. 
72° 30' to 73 
0 30' (continued). 
Munroe 
o / 
41 55 
276 32 
1839. 
Loomis. 
73 32*3 >- 0 
Munroe 
41 55 
276 32 
1841. 
Loomis. 
73 19-0 25 6 
Toledo 
41 41 
276 28 
1839- 
Loomis. 
73 06-1 
Maumee 
41 34 
276 23 
1839. 
Loomis. 
72 49-1 
Ypsilanti 
42 14 
276 22 
1839. 
Loomis. 
73 18-0' 
Ypsilanti 
42 14 
276 22 
1841. 
Loomis. 
73 1 8*81 
^ 73 18-4 
Ann Arbor 
42 18 
276 15 
1839. 
Loomis. 
73 13-9 
Ann Arbor 
42 18 
276 15 
1841. 
Loomis. 
73 16-5 
>73 14-7 
Ann Arbor 
42 18 
276 15 
1843. 
Locke. 
73 13-6 J 
Chicago 
41 53 
272 16 
1841. 
Loomis. 
72 47-8' 
Chicago 
41 53 
272 16 
1841. 
Nicollet. 
72 45-8 
>72 44-3 
Chicago 
41 53 
272 16 
1842. 
Younghusband. 
72 39-3 1 
Campbells 
43 01 
270 34 
1841. 
Loomis. 
73 28*1 
Mineral Point 
42 50 
270 02 
1839. 
Locke. 
73 20-6] 
Mineral Point 
42 50 
270 02 
1841. 
Loomis. 
73 23-0 j 
> ;3 21-8 
Galena 
42 28 
269 47 
1841. 
Loomis. 
73 03-0 
Platteville 
42 43 
269 46 
1841. 
Loomis. 
73 17*2 
Farmer’s Creek 
42 13 
269 37 
1839. 
Locke. 
72 36-0 
Dubuques Town 
42 2Q 
269 37 
1839- 
Locke. 
73 05-0 
Little Mahoqueta 
42 31 
269 29 
1839. 
Locke. 
73 08-0 
White Water River 
42 18 
269 22 
1839. 
Locke. 
72 55-0 
Iron Ore Bed 
41 55 
269 20 
1839. 
Locke. 
72 50-5 
Turkey River 
42 42 
269 12 
1839. 
Locke. 
73 11-0 
Mahoqueta, North Branch 
42 23 
269 08 
1839. 
Locke. 
72 51-0 
Mahoqueta River 
42 14 
269 05 
1839. 
Locke. 
72 43-6 
Prairie du Chien 
43 01 
268 51 
1839. 
Locke. 
73 1 6*6 
73° 30 
to 74° 30'. 
Boston 
42 22 
289 01 
1842. 
Locke. 
74 05-7 
Boston 
42 21 
288 56 
1841. 
Graham. 
74 09-4 
Dorchester 
42 19 
288 55 
1842. 
Lefroy. 
74 12-8 
Cambridge 
42 22 
288 52 
1839. 
Loomis. 
74 20-r 
f" Graham"! 
Cambridge 
42 22 
288 52 
1841. •< 
and > 
74 17-3 
l 
Bond.* J 
^>74 18-2 
Cambridge 
42 22 
288 52 
1842. 
Locke. 
74 14-8 
Cambridge 
42 22 
288 52 
1842. 
Lefroy. 
74 19*5 
Cambridge 
42 22 
288 52 
1845. 
Locke. 
74 19-4 
Cambridge, New Observatory . . 
42 23 
288 52 
1844. 
Graham. 
74 18-2 
Providence. . 
41 50 
288 35 
1839. 
Loomis. 
73 59-6 ) 
Providence 
41 50 
288 35 
1841. 
Bache. 
74 02*8 >74 01*1 
Providence 
41 49 
288 35 
1842. 
Lefroy. 
74 00-0 I 
Worcester 
42 16 
288 12 
1839. 
Loomis. 
74 20-6 
Springfield 
42 06 
287 24 
1839- 
Loomis. 
74 06-91 D 
Springfield 
42 06 
287 24 
1841. 
Bache. 
74 10-7] 
UO'O 
Longmeadow 
42 02 
287 24 
1839. 
Loomis. 
74 05-3 
Harford 
41 46 
287 19 
1839. 
Loomis. 
73 58-1 
Powkeepsie 
41 41 
286 05 
1844. 
Locke. 
73 57*7 
Opposite Powkeepsie 
41 41 
286 04 
1844. 
Locke. 
74 12-3 
Port Sarnia 
42 58 
277 26 
1845. 
Lefroy. 
74 15-7 
Detroit 
42 24 
277 00 
1845. 
Lefroy. 
73 38-8Y 
Detroit 
42 25 
277 00 
1839. 
Loomis. 
73 42-6 
Detroit 
42 25 
277 00 
1841. 
Loomis. 
73 35-2 
Detroit 
42 25 
277 00 
1841. 
Nicollet. 
73 32-7 
^73 35-0 
Detroit 
42 25 
277 00 
1842. 
Younghusband. 
73 28-7 
Detroit .... 
42 25 
277 00 
1843. 
Locke. 
73 32-2 J 
* Mr. William Cranch Bond, Director of the Cambridge Observatory. This result is the mean of 28S 
observations with two needles. 
