Magnetism of the United States and its Vicinity 



193 



Table I. — Continued. 



Station. 





J 



Latitude. 



Longitude 



Dip. 1 



Date. 



1 844 



Kennebec, 



45° 20' 



69 58' 



76 23'- 7 



Canaan Corner, 







45 o 



71 3i 



76 23 -5 



i845 



Lake Mempliremagc 



>§5 « 





45 o 



72 i3 



76 8-4 



i845 



Rouses Point, 



m^j * 





45 o 



73 22 



76 4o*7 



1845 



Bangor. . 







44 48 



68 47 



76 ii-6 



1841 



Portsmouth, , 









43 5 



70 44 



74 5i -o 



i844 



Cambridge, 









42 22 



71 8 



74 17*8 



1842 



Boston, . 









42 2r 



71 4 



74 9 '4 



1841 



West Point, . 









4i 24 



74 1 



73 20 • 1 



i84o 



New York, 









4o 43 



74 1 



72 28 -9 



i844 



Philadelphia, , 









39 57 



75 ri 



72 1 -8 



1842 



Baltimore, 









39 17 



76 37 



71 39-7 



1842 



Washington, 









38 53 



77 1 



71 i3-i 



1 1842 



Sabine River, 







32 I 



94 



61 36-8 



I840 



Natchitoches, 







3i 44 



9 3 i5 



61 i5*9 



l840 



Gaines's Ferry, 







3i 28 



93 45 



60 57 



I840 



Mouth of Sabine. 







2Q 44 



93 5i 



58 32 '9 



l840 



1 Month of Missi 



issipp 



• 



', \ 28 5 9 1 



»9 21 1 



58 42-2 



l840 



The observations of Prof. Locke were made with instruments 

 manufactured by the late Mr. Robinson of London. The dip- 

 ping compass was furnished with two needles, each of six inches 

 in length. The intensity apparatus was of the model invented 

 by Prof. Bache, the needles being vibrated in a glass vessel nearly 

 exhausted of air. The observations of 1838, '39, and '40 hav- 

 ing already been copied into this Journal, are not here repeated. 

 The following is a summary of the observations of 1841, '42, 



and '44. 



Tabj.tl h. 



> 



Station. 



Isle Royale , 

 Magnet Inlet, 



Houghton's River, 

 Eagle River, 



Ontonagon, 



LaPointe, .... 



tncampment, Lake Superior, 



8»uJt St. Marie 



Mackinaw 



Toronto, 



^°ckport, 



Rochester, 

 Utica, 



Buffalo, 



Albany, 



Detroit, 



Boston, 



Cambridge, 

 Ann Arbor, 

 Ashtabula, . 



^ghkeepsie, 



C'eveland, . 

 Huron, 



J" Haven, 

 Warren, . 

 New York 



Latitude. I Longitude 



S E 



cohd Series, Vol 



48" 



47 



47 

 47 



47 



46 

 46 

 46 

 46 

 45 

 43 

 43 

 43 

 43 

 42 



42 



42 



42 

 42 

 42 



4i 

 4i 

 4i 

 4i 



4i 



4i 

 4o 



& 

 28 

 28 

 28 



27 



52 



47 



44 



3i 



54 

 33 



8 



7 



53 



3 



2 



22 



22 



16 



52 



4i 

 3o 

 26 

 18 

 16 

 43 



88° 



88 



88 



88 



88 



89 



90 



87 



84 

 84 



79 



78 



77 

 75 



78 



73 

 82 



70 



71 

 83 



80 



73 

 81 



82 



72 

 80 



74 



47' 

 r 



o 



1 



23 



3i 



58 



43 

 32 



10 



20 



46 



5i 

 i3 



55 



45 

 56 

 5 



3 9 



52 



55 

 42 



27 



57 

 55 



Dip 



7 8° 

 78 



77 



77 



77 



77 

 76 



76 



77 

 76 



75 



74 

 74 



74 

 74 



74 



73 



74 



74 



73 

 73 



74 



73 

 73 

 73 



72 

 72 



7'-6 

 38-5 

 i3-5 

 20-7 



54-5 

 i3 2 

 56 o 

 58-3 

 3o-2 

 38-8 

 i3-o 

 44-2 

 38-8 

 48-8 



36 5 

 41 -6 



32-4 



5-7 



i4-9 



i3-7 



25 o 



5 -o 

 8-o 



O 'O 



29 8 

 55-9 

 3 7 -2 



Intensify. 



1-889 

 1-910 



i-o5o 



i-842 

 1861 



i-865 



r875 

 i-856 

 1 -86 1 



1-864 

 i-83t 



1 808 



1-806 



1809 



1825 



1-792 



i-8i5 



1-767 



1*774 

 1-828 



i-855 



i*799 

 1-824 



1-817 



T774 



i-8o5 

 1-783 



i843 

 1 843 

 i843 

 i843 



1 843 

 i843 

 i843 

 i843 

 i843 

 j 843 



i844 

 i844 



1 844 



j 844 



i844 



j 844 

 1 84 3 



1842 



1842 



i843 



i844 



i844 



i843 



i843 

 1842 



i844 

 1842 



IV, No. 11. -Sept., 1847. 



25 



