Characteristics Of A Good Lodestone

n^HE lodestone selected must be distinguished by four marks—its color, homogeneity, weight and strength. its color should be ironlike, pale, slightly bluish or indigo, just as polished iron becomes when exposed to the corroding atmosphere. I have never yet seen a stone of such description which did not produce wonderful effects. Such stones are found most frequently in northern countries, as is attested by sailors who frequent places on the northern seas, notably in Normandy, Flanders and Picardy, This stone should also be of homogeneous ma-

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