I N D E X. 



Swartrik, tfbeflos of _ . ,#5 



Syflem of foflils, difficulty of founding it - 226 



Tarentaifian afbcllos *V . 182 



Terra Ponderofa 246 



Thoyth, hi Ingenuity \^ 



Tiles, ordinary fault* of them , 9 *r j^g 



Triple metallic falti " :> U 7 *', 266 



Triple fall* - 363 



Triple earthy falls . - '** }^$ 



Tubalcain made difcovcries concerning metals [*1^* II 

 Umbrians, a full extracted by them from the afhci of reeds 



an-1 bulruflics *' : 83 



Unlvcrfal medicine ** '"' ' 143 



Varieties of organic fofTils * * ' ; 295 



Volcanic produflions ";-' 237 



Waters of Mcdvi, their phyfical qualities - : *'.;' 391 



White mercurial precipitate ; 349 



preparation of it '' '*' 350 



diflblvcd in water ' 357 



. adulteration of it ' * V'"' : "'v "'' 35^ 



Zillcrthal, fchorl fibrous of '*' il'- K/> 



Zoroafter, the reputed author of many writings on chc- 



miftry, &c. , : " ?* 



r i N i s. 



