0fOXFO%p*SHI%E. % 



they are more or lels free, they have proportionable transparency 4 

 and fom hardnefs too ; as the beft of gems, the Diamant? evinces^ 

 And if he fhall ask what Salts are the apteft to perform this feat 

 of petrification? though the difficulty of the queftion might well 

 excufe me, yet Fie venture thus far to give him anartfwer, That 

 I have frequently feen at Whitftable in Kent-, how their Coperas of 

 Vitriol is made out of ftones that 'tis more then probable were 

 firft made out of that : to the Spirit of which Vitriol if you add 

 Oyl of Tartar? they prefently turn into a nVd and fom what hard 

 fubftance, not much inferior or unlike to fome incruflations % 

 which feems to conclude, that from thefe two, all fUch like cort* 

 ctetions are probably made ? and that could we but admit that 

 Ocean of Tartar, which Plato 1 placed in the center of the Earth* 

 and thought the origin of all our Springs? the bufinefs of petrifi^ 

 cations were fufficiently clear. To which I alfo add in the be- 

 half of Vitriol? what's matter of fact, and prevails with me much, 

 That where-ever I find ftrong Vitriol waters, the petrifying ones 

 are feldom far oft"; which as far as I have obferved, 1 believe 

 may be reduced to thefe three kinds that prefently follow. 



i. Such as purely of thcmfelves TStpetrifyed? the very body 

 of water being turned into (tone as it drops from the 

 rocks, which we therefore commonly call Lapidesflil-* 

 latitios? and fhall accordingly treat of them in the 

 Chapter of Stones'? thefe not ftriftly coming under fetri* 

 fications? where befide the water zxi&faxeou* oefdur? there 

 is always required a fubject to work on of a diftinft 

 (pedes from either of the two ; as in 



2. Such aspebrifie by incruftation?and are only fuperficial, of 



3 . Such as petrifie per minima? or totumper totum ; of both 



which I fhall inftantly treat, but of the laft more at 



large in the following Chapter. 

 26. Incruflations? are petrifications made by fuch waters as let 

 fall their ftony particles, which becaufe either of their own big-* 

 nefs, or clofenefs of thepores and texture of the Body on which 

 they fall, are fixt only to the fuperficial parts? as it were, by ag- 

 gregation? and do not enter the folid body ; of which I have met 

 with feveral in Oxford-Jhire? and particularly at Sommerton? as 

 was above-mentioned, where the grafs, being one of xhefluvia^ 



Anton- Galataus dtflurmmin itrmibm. 



E tilia? 



