ESSAY 



TOWARDS A 



§ y S T E M 



O F 



MINERALOGY: 



AXEL FREDRIC CRONSTEDT. 



Translated from the Original Swedifti, with Notes, 

 By GUSTAV von ENGESTROM. 



TO WHICH IS ADDED, A 



Treatife on the Pocket-Laboratory, 



CONTAINING 



An Eafy Method, ufed by the Author, for 

 Trying Mineral Bodies, 



WRITTEN BY THE TRANSLATOR. 



The Whole Revifed and Corrected, with Tome Additional Notes, 

 By EMANUEL MENDES DA COSTA. 



L O N D O N: 



Printed for Edward and Charles Dilly, in the Poultry, 



M DCC LXX, 



