62 Improvements in Physical Science [Jan. 
Siti ras oe Nadia dem Olen wale oni olen EO. 
Alumina..... bc: iodiliaes cadens oleae o'ater Ss 
Oxide of iron........ ee ere 
WRRRED sso atahe' ohh e 2 G-c.e dud ecatettaMa tk oa ee 
99 
4. Raxoumoffskin.—Lentz discovered in the clefts of quartz rocks 
in Silesia, a particular mineral to which Professor John gave the 
name of Kazoumoffskin. It is a snow white powder, which ad- 
heres to the tongue. Dobereiner has subjected it to a chemical 
analysis, and found its constituents as follows :— 
Mg OTE os oc acn pear abe heatnn ls a bene, Oe 
yeas 2 ads n-5 Seen ainhipdccelacelsite Laecaitstas eam 
Carbonic acid..«....... ak ibe inciciie sisazecala ore 
Water. eeeeese#eteeeeeee *e*eeee@see eae eenene 2 
5. Kieselcinter—Mr. Zellner has subjected this mineral to a 
chemical analysis. ‘The result was as follows :— 
DO po og a, ees we oe eteunas ereceveces. DOOD 
Water’ soc ccceccnccaccemncssvecee, OOO 
PRUPEDITUE a\-n canis’ ss 'clo'e o ctec nine'c dinime sal ee 
Tron » es = gue 6, e. 6 e*seeeewse ov eeeeee eeeen ee 1°25 
Trace of lime -_——— 
99:50 
6. Iron Pitch Ore-—This mineral made its appearance in a coal- 
mine in Germany, which had for some years been filled with water. 
I have seen no accurate description of it. Zellnor, who gives the 
following chemical analysis of it, refers to Karsten; but I have not 
his account of it in my possession. Its specific gravity is from 
2°00 to 2°22, its constituents are 
Oxide of itm. oo. See cec ce cess eues OD 
Saiphericwatidy Wks eden eae Ome 
Water, op ccessdivcrcrewegcveaceed Sao 
99°5 
7. Egyptian Serpentine.—What is called green Egyptian marble 
consists, according to John, of a serpentine containing particles of 
calcareous spar and diallage. ‘The serpentine is of a brownish and 
brownish red colour. Its constituents are as follows :— 
PR a whe wie eae, v0 aise oof jotta la Waid AOE 
Magnesia..... PES ae oho ahs Pee aria, epi 
Alumina ........ a Wh tw Se ee oe 3 
Onademi rome soi. Go ao RO 
Oxide of manganese ............... 1°50 
Water. Simei wen sad .. eT oiie hie ate’ Spurs 10°50 
Lame «.,..m ee * sath ae cweccccces OSD 
93°25 
8. Pyrodmalite.—This mineral was discovered in the mine of 
