Mineralogy and Geology. 431 
| Montgomery by Cheek’s Creek; and finally through Anson, a few 
; above Wadeésboreugh, into South Carolina. The eastern bound- 
ary will be indicated with sufficient exactness, by mentioning the points 
where the roads meet¥, that diverge westward from Raleigh. On the 
road to the Fishd on the Neuse, the sandstone begins to appear 
i F BByce’ ’s Mills, and five from the Fishdam, on the 
road. On the Westegn road to Hillsborough, the line of the forma- 
sia passes a little east Brassfield’s. The same line is met with on 
«Red | is Bhi nortan color of the sandstone ; st ‘several shades 
of this are exhibited, and a a light gray and a dally ellow are not un- 
frequent colors. All these varieties are often contained in the same 
bed within a few feet of each other. A similar ‘diversity prevails* in 
the texture ~& this rock. bs is sometimes Very fifely-grained, some- 
times very coarse: in one place, the grains ‘are very closely ce- 
mented reethier, forining a A Katd, firm rock ; in another, they cohere 
» an id the rock is 2 eee aaah and destitute of strength. 
It is important to note all th cir¢iimstances, to show that there is 
much reason for examining with cary and pains in | materials 
for building or other pu Agr " 
“This region of sandstone embrages beds of that conglomer- 
ate rock which is used for mailistingie “But he most eg ate lo- 
tars of the millstone grit occurs on tga Greek, in Moore County, 
‘Pe will justify some degree of minuteness in speaking of it. ‘This 
excellent bed of millstone grit is exposed to view directly on the bank 
of the Creek, forming three horizontal strata or layers, each compo 
of large tabular massés. The lowest stratum is of the best quality for 
millstones. It consists of a hard, grayish red sandstone, in which are 
thickly imbedded water-worn Ca of white flint or quartz. 
his formation may be considered as a continuation of the Rich- 
mond coal deposit, and both are 7 hélieved to be a continuation of a long 
and narrow deposit of sandstone which extends from Connecticut niver 
to the Rappahannock.* Indications of coal have been observed in va 
“* Mr. MClure, the di hed President of the American Geological Society, 
“has traced above oe of sandstone for an extent of 400 miles to the bap 
e supposes it to terminate on the south. Of the Richmond ba- 
sin he remarks, that “it would not be far distant from the range of the red sandstone 
formation had it continued so far south.” Our sandstone formation, which lies in the 
‘same ro} 
ne. eager ce were as age 
h not are od pec ionsie to diferent atta 
