Geology and Natural History. 391 
The descriptions in this work by Dr. Lasaulx are clear and con- 
cise, and generally include one or more chemical analyses, The 
classification is based first on (1) the fact of one mineral constitu. 
ent, or (Il) many; and, under these heads, on texture, as non- 
14. Minerals of Bourbonne-les-Bains.—In addition to the min- 
eral species of these hot w ters serge d on page 228 of this 
(chloride of lead), covered with a crust of mixed galenite and 
gypsum ; and, from the interior of a tube of bronze, a coating con- 
Paine of ihacamile, —L Institut, Aug. 4. 
. Miner alogische Mittheibungen ; von V, Rirrer v. ZEPuARo- 
Say VI, 1875.—This sixth number of the mineralogical contribu- 
tions by ‘Professor Zepharovich conta descriptions of crystals of 
aragonite from Eisenerz and. Hiittenberg, of native arsenic from 
Joachimsthal, and a discussion of the crystalline form of cronsted- 
number of planes, mostly in the prismatic zone, with abnormal 
Pp 
fractional indices, oi Segue to those long since saree hed 
W ebs sky. 
a recent vainahis memoir on the coomduaden of anatase (octah 
drite) has shown that the wiserine (xenotime) from the Binnenshal, 
eared ae Ke Sh is epee identical with octahedrite, He 
tha 
B. 
17. mesa 287 anew mineral ; by GiwEon E, Moors, Ph. D. 
—Oceurs in druses of lu istrous crytals, and in foliated aggregates, 
gave for R~ R 114° 80, and OA & 104° 13’ (required 103° 48’), 
laminze slightly flexible. H.=2: = 5 Taster mnotallic. 
Color Dinish-blask to iron-black, Streak chocolate-brown, dull. 
que. Before the blow-pipe turns to a yellowis wish-bronze or cop- 
per-red ; exfoliates slightly, and on continued heating darkens in 
color, and fuses slightly on thin edges. With the fluxes gives 
strong uo agi aes Be and on ¢ arcoal rae — gives a coat- 
ide of zinc. Soluble $s ydroakiod! 
nalyses: 1, of distinct ils 2, of sealannitie agg 
Possessing a radia eh ata In the latter case the materi ms 
