In the following year he announced that silica was the oxide of a hitherto unrecognized element, which he named silicium, considering it to be a metal. [Please select]
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Of these, silicium is the most usual, and there is probably no cast iron that does not contain a portion of it. [Please select]
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Silicium has been discovered combined with iron to the extent of 3-1/2 per cent. [Please select]
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Iron obtained from the ores by means of coal, is, under circumstances of equality in other respects, more likely to be combined with silicium than when made with charcoal. [Please select]
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