A N 
essay 
TOWARDS A 
SYSTEM 
o r 
MINERALOGY: 
B Y 
AXEL FREDRIC CRONSTEDT. 
Tranflate^ from the Original Swcdifh, with Notes, 
3y GUSTAV VON ENGESTROM, 
TO WHICH IS ADDED, A 
Treatife on the Pocket-Laboratory, 
COHTAINIHG 
An Eafy Method, ufed by the Author, foj 
Trying Mineral Bodies, 
WRITTEN BY THE TRANSLATOR. 
The Whole Revifed and Corredled, with fome Additional Notes, 
By EMANUEL MENDES DA COSTA. 
LONDON: 
Printed for Epward and Charles Djlly, in the Poultry, 
M DCC LXX. 
