1817.) during the Year 1816. “9 
Silica se \. ss ccule eevee se S280 
Kame ;. ocd. anes. &. on Be 
Magnesia .....+e+eeeseces 12°40 
Oxide of manganese ...... 8°30 
Oxide of iron. ....ee08. sis aeons 
Volatile matter ............ 8°74 
98:00 
its symbol is mg S? + 2CS* + 3MS° + 4 Ag. 
~ (4.) Precious Serpentine from Skyit Mine, near Fahlun.—ite 
eonstituents were, 
ES 5 oan» atu aioe wn mainte . 43°07 
Magnesia .......- posren aw Ai Se 
Oxide of iron ..... avin co ay 
hame.,->.. sce eesseceue 0°50 
a 4 wlalase 0°25 
Welatile matter ......02s0%0 12°45 
Oxide of manganese........ Trace 
97°81 
Dr. John had previously analyzed this mineral, and found its 
constituents, 
SHCA eo wee CURE UCN det) 42S 
Magnesia... 0.00008 desis SS 
Weare Of WOM fi. ss ate cess LCS 
WHEY biaeesesess Ha tp fe 
97°8 
Hisinger conceives that the precious serpentine may be 2M S + 
Ag mixed with S* Aq. 
(5.) A yellowish brown Stone from Fahlun, called Hard Fah- 
lunite.—Its constituents were, 
OG sass ielstea ease 45:90 
PAL UIEAUIAY cide sins v an,o vader . 31°10 
Magnesia ..........+ oseoe 18°50 
Oxide of iron ..... a iach A 3:00 
Oxide of manganese........ 0°50 
PUNO, FIC ansiterid,rne due on 0°20 
Volatile matter .........+.. 3°00 
97°20 
Hisinger considers it as M S* + 2 AS. 
(6.) Jron Flint. —Its constituents were, 
SIMD 5p vores dos phere 90:00 
Peroxide of iron ....s00... 8°99 
Lime and manganese .,.... 5°15 
Alumina ...sesesgeeeeyee Trace 
99°14 
