142 TRANSACTIONS OF THE [mAR. 18, 
east unbroken, but further research proved the fact that the 
King’s Mountain Range, with its sandstone and limestone, 
also passes through this granite formation further east than I 
first looked. Reaching the point left blank on this map (8), I 
found a district so completely covered with sand that it is 1m- 
possible to determine what is the formation underneath. But 
going on further, we come to another body of granite, which 
makes me suppose it possible for this tin formation to be bounded 
on both sides with granite for a distance of eight or ten miles. 
Beyond this to the northeast, the altered slates and limestone 
formation assume precisely the same relative position to the tin 
formation which we find at King’s Mountain. Beyond Lin- 
colnton we no longer have this granite extending, but we find a 
region that has a very old appearance ; the rocks are gneiss and 
well stratified, presenting the appearance of thick, coarse flag- 
ging-stones,—a section where magnetite is found in beds. The 
Fie. 5.—Section in railroad-cut near King’s Mt. village; length shown, about 100 feet. 
T, trap-dike; ms, mica-slate; gt, large fissure-vein of greisen with tin. 
rocks of Pasour, King’s, and Anderson’s Mountains are identi- 
cal. In the tin formation of the country northeast of Lin- 
colnton, I have only been able now and then to find cassiterite. 
In the first place, outcrops of greisen are meagre, and when 
found I have detected the presence of cassiterite in but one or 
two instances only. 
Figure 5 represents the side of a railroad cut about half 
a mile from the village of King’s Mountain, where the trap dike 
is shown distinctly cutting mica slates, which have here a direc- 
tion of strike nearly northeast and southwest, the dike varying 
about fifteen degrees to the north. The fissure vein is found 
cutting the formation about ninety feet distant from the dike 
and parallel to it, and at that particular point has a transverse 
section which at first appears to be almost columnar across the 
fissure, resembling very much the dike itself; but a close ex- 
amination reveals a division in the rocks which approaches in 
resemblance to a combed texture. Besides, we have on each 
