•WATSON — THE HJIMATITE DEPOSITS OP GLAMORGANSHIRE, 
anticlinals, and thus establishes, apart 
from the inland pitch of the rock on 
the shores of the Channel, the true 
direction whence proceeded those ele- 
vatory disturbances by which the vast 
masses of this rock emerge from be- 
neath the coal-measures. When walk- 
ing over the country, what first strikes 
the physical geologist, is, the ft-equent 
fractured and upturned edges of the 
limestone-strata, wherever the summits 
or axes of the anticlinals are bared, 
either by their cropping through the 
soil, or by the artificial exposure of the 
beds, as laid open for quarrying, by the 
removal of the conglomerate " cap." 
That such masses of rock were once 
continuous, and the now broken beds 
were formerly uninterruptedly joined, 
does not admit of doubt ; and it is in- 
teresting to notice how the old wea- 
thered surfaces of the inchned ledges — 
presenting marks of attrition so similar 
to those which are now to be observed 
from the action of the waves on the 
same rocks at the adjacent shore — are, 
according to their elevation, either 
lapped over by conglomerate, or covered 
with the drift-gravel. If we restore the 
outline of the ancient surface of the 
tract as it existed after, perhaps, the 
first convulsions, and before the land 
sank beneath the sea to receive the 
deposits of the newer rocks, by joining 
the figure of the " coursing " of the 
limestone-strata by lines proportion- 
ately curved to the prevailing "dips," a 
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