In an oxidizing atmosphere it is indifferent to silica, and therefore siliceous bricks containing a considerable proportion of ferric oxide, when used in flues of boilers, brewers' coppers, &c. and similar situations, are perfectly fire-resisting so long as the heated gas contains a large proportion of unconsumed air.
Even the statement that the bodies of Sennacherib's soldiers were burned while their garments and armour remained unconsumed has its parallel in Sanh.
The view has been held that in the Eucharist the elements are only consecrated as regards the particular purpose of reception in the service itself, and that consequently what remains unconsumed may be put to common uses.
By the term " ash " is understood the mineral matter remaining unconsumed after the complete combustion of the carbonaceous portion of a coal.
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