Tuesday, November 28th, 1871.
—The excellent Captain told me the most bewildering things abt. the compass and the effect produced upon the needle by the iron of the ship : the newest dodge to counteract it is putting 2 magnets at the foot of each compass-stand at right angles to each other. Exactly like conscience striving against temptation ! and like it, alack ! in being only an imperfect safeguard.
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