318 
MAGNETIC SURVEY IN NORTH AMERICA 
Table XLVIII. (Continued.) 
Station. 
Lat. 
Long. 
Observer. 
Magnetic force. 
Relative scale. 
Toronto = 1-836. 
In absolute measure. 
Horizontal. 
Total. 
Between the latitudes of 40° 
and 45° (continued). 
Little Mahoqueta River. . 
42 31 
269 29 
Locke. 
1*823 
13-80 
Davenport 
41 30 
269 34 
Locke. 
1-818 
13-76 
Wabisepinnecon River . . 
41 44 
269 37 
Locke. 
1-832 
13-86 
Dubuques Town . . ... 
42 29 
269 37 
Locke. 
1-818 
13-76 
Farmer’s Creek 
42 13 
269 37 
Locke. 
1-836 
13-90 
Lostgrove 
41 39 
269 51 
Locke. 
1-822 
13-79 
Mineral Point 
42 50 
270 06 
Locke. 
1-819 
13-76 
Blue Mound 
43 01 
270 22 
Locke. 
1-826 
13-82 
Madison 
43 04 
270 54 
Locke. 
1-862J 
14-09 
Chicago 
41 53 
272 16 
Younghusband. 
1-823 
13-80 
Chicago 
41 53 
272 16 
Younghusband. 
4-106 
13-77 
St. Mary’s 
40 32 
275 41 
Locke. 
1-805 
13-66 
Piqua 
40 06 
275 47 
Locke. 
1-799 
13-61 
Urbana 
40 05 
276 12 
Locke. 
1-816 
13-74 
Ann Arbor 
42 18 
276 15 
Locke. 
1-828 
13-84 
Amherstburg 
42 06 
276 47 
Lefroy. 
1-822 
13-79 
Detroit 
42 25 
277 04 
Lefroy. 
1-814 
13-72 
Detroit 
42 25 
277 04 
Locke. 
1-815 
13-73 
Detroit 
42 25 
277 04 
Younghusband. 
1-826 
13-82 
Port Sarnia 
42 58 
277 26 
Lefroy. 
1-825 
13-81 
Huron 
41 26 
277 33 
Locke. 
1-817 
13-75 
Goderich 
43 45 
278 03 
Lefroy. 
1-828 
13-84 
Cleveland 
41 30 
278 18 
Locke. 
1-824 
13-80 
Cleveland 
41 30 
278 18 
Younghusband. 
1-807 
13-67 
Ashtabula 
41 52 
279 08 
Locke. 
1-855+ 
14-04 
Warren 
41 16 
279 11 
Locke. 
1-805 
13-66 
Wheeling 
40 08 
279 13 
Locke. 
1-813 
13-72 
Wellsville 
40 38 
279 16 
Locke. 
1-794 
13-58 
Pittsburg 
40 32 
279 58 
Locke. 
1-803 
13-65 
Penetanguishene 
44 49 
279 59 
Lefroy. 
3-326 
14-08 
Toronto 
43 39 
280 39 
Lefroy. 
1-836 
13-90 
Toronto 
43 39 
280 39 
Locke. 
1-836 
13-90 
Toronto 
43 39 
280 39 
Lefroy. 
3-535 
13-90 
Near Toronto 
43 39 
280 41 
Locke. 
1-835 
13-89 
Niagara 
43 05 
280 51 
Lefroy. 
1-822 
13-79 
Buffaloe 
42 53 
281 06 
Lefroy. 
1-814 
13-73 
Buffaloe 
42 53 
281 06 
Locke. 
1-825 
13-81 
Lockport 
43 11 
281 14 
Locke. 
1-808 
13-68 
Allegheny Summit .... 
40 27 
281 50 
Locke. 
1-800 
13-62 
Rochester 
43 08 
282 09 
Locke. 
1-806 
13-67 
Cumberland 
40 13 
283 10 
Locke. 
1-789 
13-54 
Brockville 
44 35 
284 15 
Younghusband. 
1-812 
13-71 
Utica 
43 07 
284 47 
Locke. 
1-809 
13-69 
Bristol 
40 06 
285 13 
Locke. 
1-768 
13-38 
Trenton 
40 13 
285 20 
Locke. 
1-790 
13-55 
Princeton 
40 22 
285 20 
Locke. 
1-783 
13-50 
Princeton 
40 22 
285 20 
Lefroy. 
1-783 
13-50 
Princeton* 
40 22 
285 20 
Locke. 
1-781 
13-48 
Princetont 
40 22 
285 20 
Locke. 
1-790 
13-55 
New Brunswick 
40 30 
285 25 
Locke. 
1-785 
13-51 
Newark 
40 43 
285 50 
Locke. 
1-784 
13-50 
* Pott’s Woods. 
+ Rock Hills (trap). 
{ Apparent local influence ; omitted in the map. 
