f 74 ] 



infomuch that foreigners, though well acquainted with the received' 

 terminolosy, cannot without being verfed in that language under- 

 ftand the meaning of the new-fangled terms lately introduced. 

 It is well known that the mineralogical knowledge of all Europe 

 is chiefly derived from the Germans and Swedes, whole nomen- 

 clature is in moft inftances the fame, and where any ambiguity 

 has arifen it has been removed by the exertions of Werner. His 

 nomenclature, where not too difcordant with the language or at 

 open variance with the received technical names of other countries, 

 fhould therefore for the fake of precifion and uniformity be 

 univerfally prefcrved. 



Abbe Havy, who is now preparing a treatife of mineralogy, of 

 which the higheft expedations are juftly entertained, fince, in 

 addition to his own fuperior intelligence and profound phyfical 

 knowledge, he is affifted with the chy-mical abilities of Guyton, 

 Vauquelin, Defcotilles and many others, and the extenfive re- 

 fearches of Dolomieu, feems convinced of the propriety of re- 

 taining the received terminology, at leaft for the prefent, with 

 the limitations and reftridions above-mentioned ; for in his pre- 

 fatory difcourfe, 27 Journ. des Mines, p. 224, he tells us, " that 

 " with refpedt to minerals of the firil clafs (that is, confifling of 

 " mere earths) he left them thofe names which they had hitherto 

 " borne, and did not take the liberty of impofing new ones, 

 '• except in cafes of neceffity, as where a new fpccies occurred, 

 ** either formerly unknown, or comfounded with one of a different 



" nature. 



