590 



SUPPLEMENT. 



inexact and erroneous inferences. But, in the 

 rapid advances of the science, the lamp of obser- 

 vation will soon dispel any obscurity ; and when 

 facts shall become sufficiently numerous, it is to 

 be hoped that some future Newton may arise, to 

 dispel the darkness and confusion which still 

 prevail in many parts of the mineral kingdom. 





