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A Letter from Dr. Wallis to Dr. Sloan, Secretary to the Royal Society, Concerning Some Supposed Alteration of the Meridian Line; which May Affect the Declination of the Magnetical Needle, and the Poles Elevation
Philosophical Transactions (1683-1775)
Vol. 21 (1699), pp. 285-286
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/102633
Page Count: 2