Malleable Glass

-M-üleabla cl asa ie a oarioütj ot scieaoe, altüonga, douutless, t!io glaziem wouid deinur to itï iatradaation uko praotical exiiteaco and utility, at le..st tor wiudow pane. Malleable guts was inad in old Hoiae; and i) t.iü c'n of Tiberhis, a Roman artiat liad, aocurding to Püny, his home douiolislied - aooortting to othur writsrs he was bebeadod - The ide of discovering tbo sacrct wad oii' ranked so:id to that of tlis philosaphw'a atn itnoog lcbemits; but ui 1845, thora is stutod to have beeu dücoveored Jt St. Etienoe in Franoe. tlia meañi of renderiug g'ais 3 malleiibla whiiu cold ai whtn iirgt, drawa frora tha pot. ïiia 8ubtaiioe, silison, is oojabined with varwus ot er gub3tanccs, and eau bo obtuined opaqu or transpsrent ;iicrytal; it ia duBonbod as very ductile and iulloable, noither air aor aoiiis uctin on it. -