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| Lake Superior in Michigans Iron country 1800's
" On the morning of the 19th of September, 1844, we started to run
the line south between ranges 26 and 27. x\s soon as we reached the hill to
the south of the lake, the compassman began to notice the fluctuation in the
variation of the magnetic needle. We were of course using the solar com-
pass, of which Mr. Burt was the inventor, and I shall never forget the
excitement of the old gentleman, when viewing the changes of the variation,
the needle not actually traversing alike in any two places. He kept chang-
ing his position to take observations, all the time saying, ' How would they
survey this country without my compass?'
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