Temporary magnetism of nickel and cobalt
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Article
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1879
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Elsevier Science
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English
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Temporary Magnetism of Nickel. 419 Pre-historic Flax.--Prof. Heer has found that the flax which was cultivated by the inhabitants of the lake dwellings is of a different species from that which is now raised. It had smaller seeds and sent numerous stalks from the ground, while the variety which is n