a CONTENTS; 



126. Metallic Salts, with an Excefs of me- 

 tallic Bafe - ; *, v . - page 



127. Triple metallic Salts - ibid. 



128. Qiuidruple metallic Salts - 267 



129. Alkaline metallic Salts .v . ibid. 



130. Synopjis tf Salts - . V; ibid. 



131. Species of Earths of & double Charac- 



ter - y 269 



132. Mixed Species of Earths , * i/ t ;. 



133. oc;^i/ Arguments their Diverjity is 

 founded - - i^/V/. 



134. The Necejfity of conjidcring the Pro* 

 portion of every Part - , ibid. 



135. Method of invejligating the fcveral 

 Species of Earths - - 270 



136. Continuation - - ibid. 



137. IVhy this Method is imperfect V 271 



138. In ivhat Manner can this Defecl be 

 corn-tied or f applied? - 272 



139. Enumeration of double Species ibid. 



140. Enumeration of triple Species - 273 



141. Qiadruple Species * * 274 



142. S>uin tuple Species - - ibid. 



143. si mount of the Species - 276 



144. Further Explanation of the Formula ibid. 



145. Species of Metals ,. v - 277 



146. Native Metals - , '.-. . 278 



147. Mine rail fed Metals . . 279 



148. Miner alijing Subftances - ibid* 



149. Metal* mine rail fed by Sulphur ibid. 



$, 151. Vitriols 



