A description is given of the preparation in vacuo of pure amorphous manganese. It is found to be paramagnetic, without trace of ferromagnetism, and to obey the Curie-Weiss law, x =2.174 × 10 -2 / T + 1540, over the range of temperature 90 to 600° K., the experimental value of x at 20° C. being 11.80 × 10 -6 .
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Bates et al. (1935) studied this question.