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Manganese

A hard, brittle, greyish-white metal, very easily oxidized, only slightly so in water. With hydrogen it fuses with difficulty, unaffected by cold water, forms hydrobromic acid, and, with the bases, but dissolving freely in dilute sulphuric acid, compounds called BROMIDES or HYDROBROevolving hydrogen gas. It has a specific MATES. It is obtained as follows: A current of gravity of 8.013. It is obtained by calci- chlorine is passed through the uncrystallizable nation in a crucible, at a strong heat, of 10 residuum of sea-water, called bittern, which parts by weight of an oxide of manganese, then assumes an orange tint, in consequence made into a paste with oil, and combined with of bromine being set free from its combinations; 1 part calcined borax. sulphuric ether is then agitated with it, and