430° Scientific Intelligence. 
4. Gneiss. a Anaivace, by F. Schonfeld and H. E. Roscoe, (Ann. 
Ch: 
u. ati xci, 302.)—1, a mica slate from the right shore of the Eisack 
G. =3:'1410; 9, gneiss from Cachoeria da Campo, Brazil, en naetNg of — 
hice. quariz, and mica, yellowish-gray in , G. =2'6128; 3, 
so-called protogine, from the Bou sia of Ment lanc, a sh feet 
below the highest peak, G. =2:7 4, gneiss ‘from Norberg, Swe- 
den, consisting of flesh-colored ances bec and grayish-black 
mica; 5, ibid., a fine grained mixture of orth “pre and quartz. 
Si Al Fe Ga Mg Na H 
1, Mica slate, 6945 1424 654 266 1:35 352 402 052== 10130 
Gneiss, 67° ‘08 ~ 4°5 $87 1:54 508 298 0438-10182 
Protogine, 71°41. 1445-258 «249 LL) 277) 805 1:25 = 9971 
4 sneer 14564* 1305 285 326 0 “8 2 1. 364 ——==h010 
7655 1286 085 247 012 529 303 —-= LIT 
“5. Meteor Iron, from Greenland. neni ant hammer describes this mass 
; itis 7 inches long, 7 high and 54 broad. Specific 
gravity. 7-00-7 Rinck. Hardness like that ef steel. With nitric acid 
romp s fine Wi ye figures. Composition (Pogg. Ann., xciil, 
Fe 0339 Ni1s8 "Qos banat S067 Phols C169 Si 0380857 
‘The | proportion 9f ca n is peculiar 
6. Orie Sandstone and Coby North C Carolina of the age of the 
Richmond ceal basin ; by Prof. dD. OumsTeD. *—| The following observa- 
tions are from the Geologi “ Report on North Carolina, by Prof. D. 
Olmsted, published in 1824, the first of all the State Geological Re- 
ports, made in this country. ‘The facts have not appeared in this Jour- 
nal, and as the Report was long since out of print, we republish them. 
The author, at the time when the investigations were made, was Pro- 
poe of Chemistry and Miseralogy 1 in the Universtity of North Car- 
olina 
Freestone and Coal formation of —_— and Chatham.—* The 
formation is very i embracing a great number of beds of ey 
cellent freestone, varying arnong themselves in color and reer but 
nearly all extremely well suited to the purposes of architecture. e 
sandstone extends from Oxford in a southerly direction, quite through 
the State. Its length, within our own State, is about 120 miles. The 
breadth of the formation varies considerably in different places. 
most toa point; on the Neuse, its breadth is about 12 miles ; between 
Raleigh and Chapel Hill, it is 18 miles; not more than 8 miles on the 
ape Fear, but soathiwned of that, it grows a little wider. Its average 
breadth may therefore be stated at about 12 miles. On this supposition, 
the whole area of the formation is 1440 miles. In going from Oxford 
to"Chapel Hill, thé traveller passes nearly on the line of its western 
boundary. This runs onward, at the foot of Chapel Hill, a mile and a 
half east of the University ; meets Haw River about three miles above 
Ha ay wood, and Deep River five miles northwest of Tyson’s Mills. 
Thence it Popes through Moore County, by Richland Creek ; thence 
