268 Scientific Intelligence. 
7. Report on Geological and Industrial Resources of the Grand Tra- 
verse Region, or the Counties of Antrim, Grand Traverse, Benzie a 
Leelanaw, in the Lower Peninsula of Michigan po by ALExaNper W1x- 
CHELL, A. M,, Professor of Geology, couces ee Soar in in University 
of Michigan, and late State Geologist. 98 pp. 8vo, with a map. Ann Ar- 
bor, 1866.—The object of this pamphlet by ne seus Winchell is to 
meow ns view the resources of the Grand Traverse Region—that is, the 
portion of Michigan on the west side of the peninsula about Grand Tra- 
verse Bay. It treats of the topography, soils, climate, timber and native 
useful plants and animals, geology and geological resources as regards 
salt, — and clays, and of the farm Sage fossi s, etc. Professor 
tion into (1) Pale buff massive fees (consi of etn | 
beds below, as “sx designates them, and Stromatopora beds above; (2) 
Bituminous shales and limestones (consisting "3 Bryozoa beds below and 
of ay Saga beds above); (3) Buff vesicular magnesian Jimestones ; 
(4) Chert beds. No. 1, or the lowest, graduate, on the east side of the 
peninsula of Michigan, into the subjacent Corniferous limestone. oy 
total — of species of fossils observed in No. 1 is 41; in 2, 87; 
3, : spec 
eae mineral localities ; by Guo. J. Brusu.—(1.) Diaspore—A 
reo r more since Mr. W. W. Jefferis sent me some minute fragments 
of a hard foliated mineral found by him at Newlin, Chester Co., Pa. 
The substance was euneddad in —— aad: on examination prov ved to 
soar to the cleavage; it is im tie io so that it is » difficult 
to make out the other planes. In size a: crystals surpass any t that I 
have seen from Asia Minor or Schemnitz, and in perfection of planes 
they compare favorably with the beautiful crystals discovered by Prof. f. J. 
Lawrence a. oe Gumuch Da, gh. 
(2.) Ouvarovite—Among some specimens presented to the metallur- 
gical collection ae Yale College by. Mr, ¢ Clayton of San Francisco, there is 
_ a piece of chromic iron, from near New Idria, California. This specimen 
x ick 
Sihgnitiel the latter proves to be in druses of crystals showing the rhom- 
bic faces of the el dodecahedron; and on blowpipe analysis the 
; hrome-garnet. 
On ery stallized hired by G. Hagemann. co for 
this Journal. ‘}—Crptala of eryolite have hitherto been considered a great 
rarity, and the only form dinens od. is that of the simple recanguls prism. 
td have been much sought for with little success, and my 
in finding them in the cryolite of a cok eer soy 
