Mineralogy and Geology. 279 
" M. Delesse remarks on the mineral similarity of the granular lime- 
stones of the Vosges and those of the United States and other regions ; 
pyroxene, tremolite and other varieties of hornblende, spinel, sphene, - 
graphite, phlogopite, pyrosclerite, are common to both 
Analyses of Limestones of Herzogthums Nassau; by Dr. R. Frese- 
Nius, (J. ss pr. Chem. liv, 85 and 374. 
Hydraulic Limestome, explored near ape ze ( Chablais.)—Manicnac 
obtained as the result of two analyses 
Cad Mg 6 mee ater. 
50°25 40°95. 17 0°92 = 100'29 
50°36 41°99 708 OST = 98'1T 
The carbonates of Time and magnesia are in the proportions of a true 
dolomite. The color of a rock is a deep gray, texture very fine and 
re fracture conchoi 
On the Daye of the Vosg by M. Detesse, (Ann. des Mines, 
[4], xix, 149.)—In the course of ‘this excellent paper, M. Delesse gives 
the following ne .: 
Si e a Na kK ign. 
.; pligorlae, Mere 66-11 1933 050 047 1:2 817 289 0:80=100-09 
mbach, 63°88 22°27 051 trace 3°45 6°66 121 0-'70= 98°68 
The name Kersantite is applied to the rock at Visembach. lt is a 
crystalline rock associated with gneiss, consisting mosily of oligoclase 
and mica, with sometimes hornblende, while Kersanton consists mainly 
of Se hal Plate 2, represents very beautifully the APRS TIRE? of 
these and other rocks. 
Meteoric Stone of Stannern.—This meteorite a in numerous pieces 
a Jag 22nd of May, 1808. Ram melsberg obtained: in an analysis 
. Ann. Ixxxiii, 591), Part ay in ‘eraser acid 34°98 p. c. 
Past insoluble 65-02 p. c. gg te —_— 
Si Al i Mg kK. CrFe 
Soluble part, 46:19 31-26 1698 112 114 0650 ==100'12 
Insoluble “ 49-44 ee ace 125 820 997 0:35 010 083=101-09; 
[m erminations 
The soluble part has nearly the oxygen ratio of Anorthite, and the 
insoluble part, that of augite. The composition is quite near that of 
the Juvenas meteorite. 
Appendix. 
i of a8: a new genni from California ; D. D. Owen, 
(Proc. Acad. Nat. Sci. Philad., vi, 108).—This mineral is from eat 
er city! California. It has a deep ah color, and a fibrous or 
rE structure, or is in tufted crystals. An ys a roximate po 
15 
y, molybdic_ acid. B.B. 
a bluish ring is formed 
a green bead is obtained. 
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