320 
MAGNETIC SURVEY IN NORTH AMERICA 
Table XLVIII. (Continued.) 
Station. 
Lat. 
Long. 
Observer. 
Magnetic force. 
Relative force. 
Toronto = 1 '836. 
In absolute 
Horizontal. 
measure. 
Total. 
Between the latitudes of 45° 
and 50° (continued). 
Portage des deux Rivieres 
48° 35 
268 33 
Lefroy. 
2-930 
13-89 
French Portage 
48 35 
268 53 
Lefroy. 
1-860 
14-08 
La Pointe 
46 47 
269 02 
Locke. 
1-875 
.... 
14-19 
Savannah Portage 
48 53 
269 57 
Lefroy. 
1-867 
.... 
14-13 
Prairie Portage 
48 58 
269 59 
Lefroy. 
1-858 
.... 
14-06 
Prairie Portage 
48 58 
269 59 
Lefroy. 
2-844 
14-18 
Portage Ecarte 
48 25 
270 15 
Lefroy. 
1-852 
1402 
Portage du Chien 
48 39 
270 26 
Lefroy. 
1-865 
14-12 
Portage du Chien 
48 39 
270 26 
Lefroy. 
2-836 
14-17 
Ontanogon River 
46 52 
270 29 
Locke. 
1-865 
.... 
14-12 
Fort William 
48 24 
270 37 
Lefroy. 
1-866 
.... 
14-12 
Fort William 
48 24 
270 37 
Lefroy. 
2-875 
13-91 
Pointe Tonnerre 
48 19 
270 58 
Lefroy. 
1-876 
.... 
14-20 
Isle Royale 
48 06 
271 13 
Locke. 
1-889* 
.... 
14-30 
Eagle River 
47 27 
271 37 
Locke. 
1-861 
.... 
14-08 
United States Agency . . 
47 28 
271 59 
Locke. 
1-950* 
14-76 
Houghton’s River 
47 28 
271 59 
Locke. 
1-842 
13-94 
Magnetic Inlet 
47 29 
271 59 
Locke. 
1-910* 
.... 
14-46 
Isthmus 
47 28 
272 00 
Locke. 
1-895* 
.... 
14-34 
Terreplatte 
48 49 
272 15 
Lefroy. 
1-854 
.... 
14-03 
Encampment 
46 44 
272 17 
Locke. 
1-856 
14-05 
Lake Superior 
48 46 
272 20 
Lefroy. 
• • • • 
3-213 
15-89 
Pic Fort 
48 38 
273 29 
Lefroy. 
.... 
2-725 
13-84 
Pic Fort 
48 38 
273 29 
Lefroy. 
1-846 
.... 
13-97 
White River 
48 33 
273 33 
Lefroy. 
2-803 
14-12 
Otter Island 
48 06 
273 43 
Lefroy. 
1-801* 
.... 
13-63 
South Manitou Island . . 
45 05 
274 22 
Younghusband. 
1-846 
.... 
13-97 
Gargantua 
47 37 
274 49 
Lefroy. 
.... 
3-190 
15-26 
Michipicoton 
47 56 
274 55 
Lefroy. 
1-855 
14-04 
Michipicoton 
47 56 
274 55 
Lefroy. 
2-870 
13-93 
Pointe au Crepe 
46 58 
27 5 02 
Lefroy. 
1-877 
.... 
14-21 
Pointe aux Pins 
46 29 
275 19 
1-862 
14-09 
Machinac 
45 52 
275 19 
Locke. 
1-864 
14-10 
Sault St. Mary 
46 31 
275 26 
Lefroy. 
3-026 
13-98 
Sault St. Mary 
46 31 
275 26 
Locke. 
1-861 
.... 
14-08 
Tessalon Point 
46 16 
276 29 
Lefroy. 
1-852 
14-02 
Snake Island 
46 10 
277 10 
Lefroy. 
1-833 
.... 
13-87 
Fort la Cloche 
46 07 
277 35 
Lefroy. 
.... 
3-108 
13-64 
Lake Huron 
46 00 
278 10 
Lefroy. 
1-840 
.... 
13-93 
Pointe au Croix 
45 55 
278 42 
Lefroy. 
1-852 
14-02 
Ricolet Falls 
45 57 
278 59 
Lefroy. 
1-870 
14-15 
Lake Nipissing 
46 13 
280 01 
Lefroy. 
1-836 
.... 
13-90 
Lake du Grand Vase . . . . 
46 18 
280 34 
Lefroy. 
1-846 
13-97 
Little River 
46 18 
281 17 
Lefroy. 
1-838 
.... 
13-91 
Trou Portage 
46 15 
281 27 
Lefroy. 
1-841 
13-93 
Deux Joachim’s Point . . 
46 12 
281 41 
Lefroy. 
1-830 
.... 
13-85 
Pointe Bapteme 
46 06 
282 34 
Lefroy. 
1-822 
13-79 
Fort Coulange 
45 56 
282 56 
Lefroy. 
1-844 
13-95 
Grand Calumet 
45 45 
283 20 
Lefroy. 
1-826 
13-82 
Chat Falls 
45 26 
283 28 
Lefroy. 
1-840 
13-93 
Point Aylmer 
45 29 
284 12 
Lefroy. 
1-825 
.... 
13-81 
Cornwall 
45 02 
284 13 
Younghusband 
1-822 
.... 
13-79 
Pointe aux Chenes . . . 
45 37 
285 05 
Lefroy. 
1-805 
.... 
13-66 
La Combes 
45 32 
285 51 
Lefroy. 
1-825 
13-81 
* Apparent local disturbance ; these are omitted in the map. 
