148 Chemical Examination 
was 845 grains of mercury: thus cinnabar contains, not iz- 
eluding the heterogeneous parts, 
Mercury - - 84°50 
Sulphur - - 14°75 
99°25 
Hs 
Cinnabar of Newmarktel, in Carniola. 
This ore is distinguished by its beauty from every other 
in Europe. The mineral is of a lively cochineal red. It is 
found in considerable masses, enveloped with a blackish gray 
chalk, traversed with veins of calcareous spar of a milky 
white. Its specific gravity is 8°160. 
A. 100 grains were heated to ebullition with 500 grains 
of muriatic acid; 100 grains of nitric acid were afterwards 
successively added. After perfect solution there remained 
10°20 grains of yellow sulphur, which burned withont leav- 
ing any residue. Mariate of barytes produced in the so- 
lution 27 grains of sulphate of barytes, which correspond 
to 3°80 of sulphur. If the loss of the sulphur, which formed 
the sulphuretted hydrogen gas, amounts to a quarter of a 
grain, the quantity of sulphur in 100 parts of cinnabar 
ought to be 1425 grains. 
B. 500 grains of cinnabar mixed with half as mueh iron 
filings, and distilled, yielded 425 grains of mercury. | 
100 parts of the cinnabar analysed, therefore, contain : 
Mercury ~ - 85 
Sulphur - - 14°95 
99°25 
Ill. 
Hepatie Subphuret of Mercury of Idria. 
A. 1000 grains of cinnabar, distilled with half that quan- 
tity of iron filings, yielded 818 grains of pure mercury. The 
sulphuret of iron remaining was mixed with a black dust. 
B. 100 grains were treated with the nitric and muriatic 
aeids, 
