MR. GARDINER AND PROF, REYNOLDS ON [May 1902, 
Taste I].—SucersreD CoRRELATION OF Series C anp D,. 
Thickness in feet. 
C (2) Green and yellow sandstones 
and slates..........., about 570 
C (8-8) Mainly volcanic. 
Thickness in feet. 
D(1) Yellow calcareous flags, with 
fucoids. ‘Top not seen .., 320 
Fault. 
1D (2) Calcareous flags, with a band ‘ 
| 
of hard green grit ......... 320 | C(9) Calcareous sandstones and 
Raulite flags, with ash-bands, of 
D (3) Ashes, with sandy layers...... 50 | Ferriter’ s ‘Cove sWeteeee 1390 
D (4) Yellow sandy beds ............ 290 J 
C (10) Coarse conglomerate, with 
erit-band..°.\...4.5)¢55 eee 30 
D (5 & 6) Green and red, pay bhe and C (11) Red sandy beds, with ashy 
ashy beds ........ 20 and conglomerate-bands . 70 
D(7) Nodular rhyolite ........)...... 50 © (12) Rhyolitel 9)... aeeeee 23 
D(8) Red sandy ashes... 40 C(18) Ash... 2072s eee 
D (9-13) Variable ae and U ashy C (14-16) Sandy limestone and 
beds: epee , 183 sandstone.. id at eee) 
Fault. C (17) Green rhyolite and ash ...... 6 
Balt 
C (18) Labradcrite -porphyrite...... 115 
Fault. 
C (19) Red and green slates. a 
D (14) Conglomerate ,...............,.. 24 -C(20) Conglomerate...) . jes 6 
It may be thought unjustifiable to correlate (D1) with (C2), 
and at the same time (DZ) with (C9), which is separated from 
(C 2) by beds 658 feet thick. But it must be remembered that the 
non-representation of (C 3-8) in the D series may be partly due to 
the fault at Ilaunaportan ; while we must not lose sight of the fact 
that the beds unrepresented in the D series are, with the exception 
of part of (C4), entirely lavas, ashes, or intrusives, and might well 
be subject to rapid variation in thickness in a limited area. These 
very beds (C 3-8), which are 658 feet thick, are the equivalents of 
(B 2-7), which are 972 feet thick, and also of the beds (A 2-6), 
still farther south, which are as much as 1026 feet thick, 
We are now in a position to summarize what we believe to be the 
general succession in the Clogher Head district: at the top :— 
Thickness in feet. 
Dingle Series. 
Croaghmarhin Beds, calcareous sandstones 
and flags of Ludlow age ....2.:5...7..0iee asc ? 1000 
(4. Drom-Point Beds (Al, B1,C2, D1) ... about 600 
| 3. Red sandstones and ashes (A 38, B3, C4), with 
| green ash (A 2, B82, C 3) afthetop Soi... 350 
12. Clogher- Head Series, calcareous flags and 
| slates, with abundant contemporaneous igneous 
\ rocks (A 5-385, B 5-15, C 6-9 [in part], D 2) 
(1. Ferriter’s-Cove Beds, chiefly calcareous flags, 
with a subordinate development of contempora- 
| neous igneous rocks (C 9 [in part]-20, D 3-14)... 
Smerwick Beds, 
Lower DEVONIAN. 
LupLow. Ey 
2000 * 
WENLOCK- 
LLANDOVERY. 1400 
* Maximum thickness seen. 
5. The uppermost Silurian beds, which east of Dunquin and south 
of Marhinmore underlie the Dingle Beds with apparent conformity, 
are the Croaghmarhin Beds, of Ludlow age—a series of grey 
