That as these Damps are caused by Heat , so they are remedy'd by withdrawing that Heat , and by conveying forth the mineral Steams ; which the Miners effect by Perflations with large Bellows
Source: wiktionary
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That as these Damps are caused by Heat , so they are remedy'd by withdrawing that Heat , and by conveying forth the mineral Steams ; which the Miners effect by Perflations with large Bellows
Source: wiktionary