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Previous to leaving England in the spring of 1824, I had  determined upon making a series of observations on the daily variation of the magnetic needle, during our stay, at the different places which might be visited by the Expedition.  Accordingly, soon after our arrival at the Whale Fish Islands,  for the purpose of transhipping the stores from the Transport  which had accompanied us thus far; the instrument for observing  the diurnal variation was landed, and placed on a pedestal in a small octagonal observatory.

II. Observations on the diurnal variation of the magnetic needle, at the Whale Fish Islands, Davi's Strait.