120 Scientific Intelligence. 
2. On Chrysolite with Chromic Iron in Pennsylvania; by Dr. F. A 
Gentu. From a letter to Prof. Dana, dated Philadelphia, Dec. 10, 1865. 
—lIt is about one year ago, sinceI wrote Prof. Brush of avery interesting 
discovery which Prof. Booth made, of a large crystal of chrysolite from 
the great (or once great) chrome mine, called Wood’s mine, in Lancaster 
e occurrence is the more interesting to me, since, in a certain 
degree, it confirms my views as to the parent rock of the serpentine and 
talc of the chrome region. I may add that > ee ots also received chry- 
solite, associated with hornblende and magnet , from near Media, 
— ware Co., Pa., at which locality occur he: beat crystals of chromic 
iro 
3. Crystallized Gold in California.—Prof. W. P. Blake states that a 
mass of he which is for the most part a congeries of imperfect crystals, 
has been nd 7 miles from Georgetown, El Dorado Co., California, 
A e “es 201 oz., and is valued at $4,000. The mass is now in New 
city. 
“He also has a California ee of an octahedral pin fess if per- 
fect would measure 2 inches on a side.—ZJn a letter to Prof. D 
4. On an Asphalt vein in ‘Woo d Co., West Virginia ; eer Pp 
Lestey. (Proc. Amer. Phil. Soe., ix, 183, 18 63.)—This vein, ,, tantedd 
about 20 miles (in an air line) sout of Pion pe cuts vertically 
through rocks that are nearly horizontal and have a strike of 8. 78° W., 
while the strike of the county is S. 35°-40° W. It isa vein of a solid 
bitumen-like substance rather than a coal bed. It resembles the ee 
siest, fattest caking ar much of it breaks up = small prisms, a 
none consists of layers. In an assay made by . 8. Lyman of ~~ 
delphia, in which’ the amount of hydrocarbon ‘iskabe in benzole w 
found to be about Se of the whole, the volatile matter, coud 
to the mean of two assays was 47°11, and of ash 1:73. The substance 
filling the vein is beyond question, Mr. Lesley observes, a product of the 
gradual oxydation of coal oil that once filed. the open fissure. 
on Deseri — of Fossils of the Marshall Group of Michigan, and 
ivalent in other States; by Prof. A. Wixcnett.—Prof. 
Winches extensive investigations among the fossils of the sandstones 
n th 
of the roped shale of New York), including the beds called the We 
verly sandstone in Ohio, and those of the rocks of which his Marshall 
Group in lower Michigan consists. have led him to suggest, if not believe, 
that these beds are not ec ents, even in part, of the Chemung beds: 
New York, but rather of certain conglomerates in western New York 
which have been referred to the inferior Carboniferous. His former iden- 
i s are all abandon ile an 
between ‘the more western beds and the supposed Carboniferous wl 
erate,” at least until observation shall have demonstrated that the Marr 
