Vol. 58. | THE FOSSILIFEROUS SILURIAN BEDS OF KERRY. 251 
(la) The Glanlack and Vicarstown exposures.—In the 
stream-bed immediately east of the hamlet of Glanlack, and on the 
hill-slopes just to the north, are good junction-sections between 
the purple. Dingle Beds and the green gritty beds which are here 
considered as the top of the Silurian. The Dingle Beds on the 
hillside dip at 40° south 10° west; while in the stream-section the 
dip is greater, varying from 60° south 10° east near the junction 
to 75° south 10° east farther up the stream. The underlying Silu- 
rians 1n each case dip conformably beneath the Dingle Beds, and, as 
previously noted by Prof. Hull,’ there is nothing to lead one to 
suppose that the junction is anything but a conformable one. The 
upper beds of the Silurian are harder and more micaceous in the 
neighbourhood of the Dingle Beds than they are elsewhere. There 
is a good series of exposures down the stream, as far as its junction 
with the one coming from Vicarstown., The dip from Glanlack as 
far as the high road is a little east of south; but from this point 
to the junction of the streams the dip is very variable, and just at 
the stream-junction the dip is north-westerly.. There seems every 
probability of a fault between this exposure and the coast. 
(16) The DunquinChurchand Ballynahowexposures.-— 
Kast of Carhoo, in a deeply-cut wheel-track going down to Dunquin 
Church, is a continuous section of grey and brown fossiliferous 
flags, with a band of hard blue grit about 50 feet thick. About 
900 feet of these beds are seen in this track ; while, if one includes 
the ashes and sandstones (already described as met with in the stream 
running westward to the Carhoo road) which dip in the same general 
direction, another 500 feet may be added to the above thickness ; 
and we may say that at least 1400 feet of Ludlow Beds are seen 
dipping about south-eastward between Dunquin Church and the 
westernmost exposure in the east-and-west stream north of Carhoo, 
But there may be a concealed fault between the flags and the ashy 
and sandy beds, and we can only say with certainty that 900 feet 
of Ludlow Beds are exposed. If the ashes and sandstones are to 
be counted among the Ludlow Beds, we have here evidence that 
the volcanic activity had not died out in Ludlow times. 
The large stream running down past Dunquin Church, between the 
hills of Coomaleague and Croaghmarhin, and its tributaries afford an 
excellent series of exposures of the Ludlow Beds, Starting at the 
foot of the wheel-track above mentioned, we find that the beds have 
the same lithological character and the same south-easterly dip as 
have those in the track, but about a quarter of a mile up the stream 
we meet with a very different dip, namely, 52° south 10° east. The 
beds frequently contain coral-layers with Halysites catenularia 
(Linn.) and Fuwvosites aspera, dOrb.. About 350 yards above the 
point where the stream is crossed by the road, a small tributary 
from Coumaleague Hill joins the main stream. It shows many 
exposures of grey calcareous flags dipping in general at south 30° to 
4 Quart. Journ. Geol. Soc, vol. xxxv (1&79) p. 703. 
