346 Elements of Mineralogy. 



der, which is fomething heavier than the 

 regulus. It is foluble in acids, but moft readily 

 in the nitrous, and its folutions are moftly 

 colourlefs, but that in the nitrous is generally 

 brownifh from a flight taint of iron, but there 

 is always a fpurigy refiduum of the nature 

 of plumbago, left undiflblved. Thefe folu- 

 tions give a white precipitate with aerated 

 alkalis, which precipitate when heated grows 

 black. 



3. The regulus is obtained by mixing the 

 calx or ore of Manganefe with pitch, making 

 it into a ball, and putting it into a crucible 

 lined with powdered charcoal ~- of an inch 

 thick on the fides, and ~ of an inch at bottom, 

 then rilling the empty fpace with powdered 

 charcoal, covering the crucible with another 

 inverted and luted on, and expofing it to the 

 ftrongeft heat of a forge for an hour or more, 



SPECIES I. 



Native. 



4. This has not as yet been found, nor 

 can it be expeded, (unlefs perhaps alloyed 

 in native iron) as manganefe lofes the pro- 

 portion of phlogifton neceflary to its me- 

 tallic form, more readily than any other me- 

 tallic fubftance. 



SPECIES 



