193 
Geological Relations of the East of Ireland \ 
the angle generally varies from 70° to 80°, except in the most 
western part near the martello tower, where it declines to 50°, and 
even to 40° toward the south-west. Here also the range varies from 
25° to 15° south of east and north of west. 
Such appears to be the general disposition ; but we have to 
remark also a subordinate arrangement. The great bay on the 
south coast is divided in its centre by a projecting ledge or pro- 
montory of rocks, elevated above the strand near one hundred feet 
high, and composed of compact beds from one to three feet thick, 
sometimes in direct contact with each other, sometimes separated 
by slaty beds a few inches thick. They range regularly 40 • 
west of north and east of south, dipping 76° toward the south- 
west. Immediately to the westward is a small inlet, where the 
alternating beds, under similar arrangement, but increasing even to 
four and five feet in thickness, exhibit a great variety of hues, from 
pale ochre yellow to brownish red and purple, and from greenish 
white to lavender blue ; forming on the large scale a curious and 
striking assemblage sf colours, disposed much in the manner of 
those of ribbon jasper. In the centre of this inlet, and a little west 
of the variegated beds, the stratified rocks display a different 
structure. Each stratum, forms a sharp edged trough, the sides 
converging, and the one stratum is inserted in the other, so that 
each bed dips on the eastern side of the trough toward the south- 
west, and on the western side toward the north-east. The stratified 
rocks preserve this north-eastern dip and retain their parallelism for 
some little distance to the westward, when the preceding arrange- 
ment is repeated, but in reverse order, the beds now forming 
inverted troughs with the keel uppermost ; so that the same beds 
dip on the eastern side of the troughs to the north-east, and on the 
western side to the south-west. In both these cases, the section 
Vol. V. 2 b 
