272 A SYSTEM, ac- 



knowledge by judicious experiments ; the more 

 we fhall find, what is wanted to form mineral 

 fyftems, and for this reafon be apt to excufe the 

 faults of thofe which have been hitherto publifhed. 

 From thofe, who of themfelves are fuiceptible 

 of thefe fentiments, I fuffer with pleafure that 

 judgment, which I am myfelf ready to pronounce 

 upon this Effay, 



Tranfeat cum ceteris. 



£ I N I S 5 



\ikM Jm mil k<J m*J 



"3jE-»&-:j£— JJ£* 



D E S C R I P- 



