OF ARKANSAS. 237 



description of lands, already spoken of, in the south-cast part of Pope 

 county, and have been derived from the same geological formations. 



PULASKI COUNTY. 



North of the Arkansas river, the stratigraphical character of the rocks, 

 in Pulaski county, is very much the same as that previously noted, in the 

 counties laying to the west. The millstone grit still forms the capping to 

 the highest hills, while the cuts in the valleys have laid bare the reddish 

 and dark underlying shales, which seem to augment in thickness to the 

 south and east; while the sandstones of the millstone grit appear to 

 become more schistose in structure. 



Imperfect crystals and veins of amorphous milk-white quartz have 

 ramified the strata, close to the junction of the sandstones and shales, 

 near Mr. Irvin's, and not far from the stage road leading to Little Rock, 

 where the adjacent walls of sandstone and shale are metamorphosed for 

 18 inches on each side of the veins, but especially on the south side, where 

 the wall is slaty and micaceous. The whole strata, through which the 

 vein runs, are so much disturbed that, for a width of fifty feet, they dip 35 

 deg. to the north east, with a north-west and south-east strike. Beyond 

 this, the strata gradually assume a more horizontal position. No mining 

 explorations have been made along the line of this vein, in search of 

 metallic ores; though I believe the conditions under which the vein 

 appears, favorable for discoveries. 



The hill at the toll-bridge, on Palarm creek, is 220 feet high, measured 

 from the bridge floor, which is about 30 feet above the bed of the creek. 

 The rocks of which this hill is composed, are thin-bedded, soft, brownish- 

 colored sandstones, dipping about 40 deg. north-east, and intersected with 

 veins of milky quartz. On the surface of some of the sandstones, quar- 

 ried out to improve the road over the hill, clusters of transparent crystals 

 were found attached. The upper part of this quartz-bearing sandstone, 

 which caps the hill, is a coarse-grained, reddish rock, which crumbles 

 easily to sand. 



About two miles west of Winfrey's old stand, a remarkably hard, black 

 metamorphic rock, in semi-crystalline blocks, traversed by numerous fine 

 veins of white quartz, crosses the road. It is one foot wide, and dips 

 about 35 deg. north-east. The strata, on each side of this tilted band, 

 appear to be nearly horizontal. 



The most important mineral locality which has yet come under my 

 observation, in Pulaski county, north of the Arkansas river, is situated on 

 Kellogg 1 s creek, and known as the " Kellogg lead mines." The principal 



