Abstract
THIS record of magnetical work performed forty years ago by Lieut. Lefroy of the Royal Artillery—now General Sir J. Henry Lefroy—is a contribution of interest to the science of terrestrial magnetism.
Diary of a Magnetic Survey of a Portion of the Dominion of Canada, chiefly in the North-Western Territories, Executed in the Years 1842–44.
By Lieut. Lefroy, now General Sir J. H. Lefroy, C.B., F.R.S., &c. (London: Longmans and Co., 1883.)
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EVANS, F. Lefroy's Magnetic Survey in Canada . Nature 29, 498–500 (1884). https://doi.org/10.1038/029498a0
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DOI: https://doi.org/10.1038/029498a0
