Observations of the Diurnal Variation of the Magnetic Needle, in the Island of St. Helena; With a Continuation of the Observations at Fort Marlborough, in the Island of Sumatra. By John Macdonald, Esq. In a Letter to the Right Hon. Sir Joseph Banks, Bart. K. B. P. R. S.
Philosophical Transactions of the Royal Society of London
doi 10.1098/rstl.1798.0019
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Date
December 31, 1798
Authors
Unknown
Publisher
The Royal Society