2£* A SYSTEM OF 



SECT. CCXLIII. 



3. Mineralifed arfenic, Arfenicum miner alifatum. 



A. With fulphur and iron*, Arsenicum ferro 

 fulphurato miner alijatum. Arienical pyrites- 

 or marcafite *. 



This alone produces red arfenic, when 

 calcined, and is found in great quantities 

 in ■ thymines of Lofas in the province of 

 Dalarne : It is of a deeper colour than the 

 following.. 



B. With iron only, Arsenicum met alii forme 

 ferro mixtum. Mifspickel. This differs with 



regard to its particles, being 



1. Steel-grained; 



2. Coarie-grained, from Weil e rill fverber- 

 get; 



ft. Cnftallifed. 



a. In an oclcedral figure. This is the 



moil common kind. 

 £. Prifmatical, from the mines of Sal- 

 berg, Weilerfilfverberget, and Helle- 

 fors in Weilmanland, and in many 

 places of foreign countries f. 



SECT. CCXL1V. 



€. With- cobalt;, almoil in all cobalt Ores* 

 Se&. ccxlviii.. 



D. With filvcr. Se£L clxxi. clxxii. 



E. With copper. Seel, excix. 



F. With antimony. Sect, ccxxxw 



* Theie kinds in Cornwall are called Silvery or White 

 Bf undies, and Plate Mundjcs. D. C. 



r The fulphureous marcafite is added to this kind, when- red 

 arfc;fti.c is to be made ; but in Sweden it is fcarcer than the 

 fuiphurecus arfenic::! pyrites. 



SECT. 



