Mineralogy and Geology. 421 
nog sh rs sieve Albertite-like aoe of Virginia described by 
J.P (see this Jour., xxxvii, 149). r. Lesley took the groun 
that . was bt true coal, and com pared it to Albertite. We gather from 
Mr. Wurtz’s Report the following facts. The vein occurs in Ritchie Co., 
in Carboniferous rocks, and occupies a shrinkage fissure. It is about 44 
feet wide; 2 inches outside are granular; the next 15 or 16 inches 
columnar and very lustrous; the middle, averaging 18 inches, though 
varying much, less columnar and less lustrous, and more resinous in frae- 
ture. He concludes that the rs was filled by the psi of = 
resinoid substance while it was in a pasty condition. 1°145 
analysis by Dr. J. Maier afforded C 76°45, H 7°82, O (with 1 traces of N) 
13°46, ashes 2°26==100. No action with cold or ‘melted caustic potash, 
or boiling nitric or muriatic acid, or aqua regia ; a brown solution with 
delicate threads. Mr. War fond tha under the same circumstances, 
Albertite might be drawn into thre 
e Report closes with ne orp as to methods of utilizing graham- 
ite in the manufacture of illuminating oils and gas, a cement for sealing 
bottles (for which its indifference to acids and alkalies especially adapts 
it), translucent varnishes, pees ee compositions, ete. 
On the discovery of Corundum at the Emery mine, Chester, Mass. 
by Dr. C. T. Tisai. (From a letter to one of the Editors.)—-At the 
middle of July last I found a perfect crystal of blue corundum or sap- 
phire at the Chester mine. This crystal is among the specimens which 
I have arranged for the Emery company to send to the Paris Exposition. 
It is surrounded by magnesian carbonate of lime or crystallized dolomite. 
The form of the renal is that of the double pyramid with six planes— 
like that bs ind by Dufrénoy on page 49, fig. 303; and it is three-tenths 
aie on 
"Note concerning the minerals of the Emery mine of Chester, Mass. ; 
6 Pr of. C. U. Sapa. (Communicated for this Journal.)—There are 
? That mineral is close to masonite pean 
® See p. 10 of my Report on the sont mine of Chester. _— 1865. 
Am. Jour. Sci.—Szconp Szrizs, Vou. XLU, No. 126.—Nov. 
54 
