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^ at >lization ; And lafily, what degree of Volatility the Sah of Tartar Jbäth4 Ulr edin that Fermentation made with its own Ferment .

As to the firß, he begins with blaming thole, that divide Saks into Fixtn Volatile , forafmuch as, in his Opinion, that Division is unknown to Na-re j there being not to be formally found in any Body before Calcination anySalt, such as the Alcalizate Salt of Tartar and othcr Fixt .Salts are, pro-> *: c d by Calcination. He therefore in forms us, That Salts that zteVolatile°re Incineration , are by the Action of the Fire, as .the Efficient, so Colliqua-p anrong themselves and with the Earthy particles, as to be fixcd therehy.^ Clearing of which he presupposeth, with lome others, that there are0 kinds of Salts, an Alcali and an Acti, as the genuin Instruments of Na-by which the several kinds and soed.s of things are put forth, andq k'ch every where are imployed in the Gemination of Tlants, and the first. ° nce ptions of Animals, and in all the beginnings of Ferment ations. Thesec 0 Salts he affirms to be both Volatile , and therefore easily resoluble by the^P e rvening Salt of the Air: sinceit appears, that all Vegetables, efpeciallyv r0f>l aticks, if they be any considerable time exposed to the Air , loose theic; and that Wood in particular, by the Action of the Air, consuming^Volatile Salt, dothin time quite moulder away. Whilst therefore thesefifi* are loosened and set at liberty by the Fire, (Tor eise they would nott,) they begin to Operate on one another; the Volatile Acid, whilst it*j° r ks upon the Volatile Alcali, fixeth it, and they are colliquated together«hich Operation of Nature being well observed, it will be manifest that. , at received Axiom, Things Volatile are fixed by thofe that are Fixt, andj ln gs fixt rendrcd Volatile by thosethat are Volatile, is false. Now, that Vo~yile bahs a.re confumed by the Air, and coüiquated by Fire, is so notorious,Common People are wont to Sink in Watet, such Timber as they^ould preserve from Vutrefaclion, thereby to keep it from Air , and to har-% it toa great degree forstrong supports of Buildings. Hence also theypl&htly Burn the ends of Timber to be set in the Ground, that so by theu fion made by Fire the Vdatik Salts, which by the Acceffion of the Moisture* me Earth would easily be confumed to the Corruption of the Timber,jdy catch and Fix one another. For which reason alio; narnely the Fufionpffie seme Volatile Salts, Ship-wrights are wont toBurn the lowermost party ^bip Sj that lyes under Water. And to use a very common Instance, Soot ■^ known, that whilst the Wood is buming, the Smoak alcends, whereinJ.two Volatile Salts are contained, that Coagulate one another into Soot,p. !c b 2 Salts may thence easily be separated and made visible; and theseSalts, constituting the Smoak and the Soot, rise so long, untill the^ oodbe quite reduced to Aßes, in which the remaining Volatile Salts areyyjttated to a Fixt Salt , easily to be wastit out by Water. These two0 a tt'e Salts therefore affor d the matter, of which the Fixt Sah is made by^ans°f the Fire.’ Whence ’tis evident, thatwemust, fas really we do,)^ l ain so much the more Fixt Salt, the more Volatile Salt there was before■t/’firatiott i n tbe Mixt Body: as also, why out of Herbs frestily burnt tolol -m, 7 Tt Astes,