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Lake Superior in Michigans Iron country 1800's

'What could be done here with- out my compass?' It was the full and complete realization of what he had foreseen when struggling through the first stages of his invention. At length tbe compassman called for us all to ' come and see a variation which will beat them all.' As we looked at the instrument, to our astonishment, the north end of the needle was traversing a few degrees to the south of west. Mr. Burt called out, ' Boys, look around and see what you can find!' We all left the line, some going to the east, some going to the west, and all of us returned with specimens of iron ore, mostly gathered from out-crops. This was along the first mile from Teal Lake.
 
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