MAGSESIUM, when heated to redness, has a most powerful affinity for oxygen, and in order t o alloy this metal with others, it is necessary to avoid bringing substances containing oxygen into contact with it. The fluxes used must therefore be free from oxygen, and in order to prevent athe reduction of silicium &om free and combined silica, and the loss of magnesium by volatilization, it is necessary to avoid heating the fused mass too long. Easily fusible metals such as tin, bismuth, cadmium,

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... d, zinc, and antimony, may be fused in small quantitywith an equal bulk