. Transactions . UJ > UJ QCO co> coQ o 3 7 £ -3 C Z o UJ _i UJ LI JL QUrCKSILVER-CONDENSATION AT NEW ALMADEN. 219 remain idle (during furnace-stoppages) they, of course, dry andshrink so that when again used they at first leak air, so as to inter-fere very much with the draft of the furnace. This temporary evil might, however, be largely avoided if thewood work they contain were impregnated after exhaustion in vacuowith coal-tar, hot asphaltum or some such substance so as to fill thepores of the wood. Owing to the small amount of wood used in thecondensers, this treatment would not add m
. Transactions . UJ > UJ QCO co> coQ o 3 7 £ -3 C Z o UJ _i UJ LI JL QUrCKSILVER-CONDENSATION AT NEW ALMADEN. 219 remain idle (during furnace-stoppages) they, of course, dry andshrink so that when again used they at first leak air, so as to inter-fere very much with the draft of the furnace. This temporary evil might, however, be largely avoided if thewood work they contain were impregnated after exhaustion in vacuowith coal-tar, hot asphaltum or some such substance so as to fill thepores of the wood. Owing to the small amount of wood used in thecondensers, this treatment would not add materially to their the most resistant material to the action of the acid, Puget Soundfir is found to be best. d. Friction-Condensers.—It has long been noticed at New Alma-den that the rapidity of condensation depends not only upon thecooling-surface and the sedimentation-volume, but also upon thearea of friction- or adhesion-surface to which the fumes are has been found to be tru
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
