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which with the argIllaceous and quartzose earth, forms itself into a silicate, or aluminate, of natron, and goes in the slag. The perox ide of manganese loses It great quantity of its oxygen, and forms itself as oxyde of manga nese with the silicious earth (from the silicum of the pig iron) to a silicate, and prevents the loss of the metal. This free chlorine, which, with constant stirring is brought to bear on Forth. Scientific Amorican. the mass, attaches itself to the sulphur, phes -Uulesdoi:10.1038/scientificamerican08261848-392a fatcat:ae4vdyy2wjdozfynd4m5iljbti