Vol. 58.]. | THE FOSSILIFEROUS SILURIAN BEDS OF KERRY. 229 
many rocks being referred to as ‘pisolitic ash,’ which have subse- 
quently proved to be nodular rhyolites. 
Prof. Hull’s* paper, ‘ On the Geological Age of the Rocks forming 
the Southern Highlands of Ireland, generally known as the Dingle 
Beds & Glengariff Grits & Slates, contains much which bears 
reference to our area, though the scope of the paper is wider. It 
contains also a valuable summary of previous communications 
on the geology of the South-west of Ireland, which proved very 
useful to us. Prof. Hull lays stress on the conformable passage 
of the fossiliferous Silurian into the Glengariff Grits. He gives 
a table correlating the Kerry Silurians with those of Mayo and 
Galway, and refers to the occurrence in both areas of contem- 
poraneous volcanic rocks. 
Lastly, Sir Archibald Geikie, in his ‘ Ancient Volcanoes of Great 
Britain,’” gives a summary of recent observations on the Clogher- 
Head area, and draws attention to the fact that in the Geological 
Survey Memoir certain rocks are described as tuffs which are now 
known to be lavas. 
II. Derattep Description oF THE EXPosuREs. 
(a) The Coast-Section from Dunquin to Owen. 
This shows the following beds, from above downward :— 
Thickness in feet. 
A(1) Green and brown sandy and slaty beds, ashy towards 
the base, of Yellow Cove (top not seen) ............... 480 (seen) 
A(2) Green ash, with large dark fragments .................. 8 
D(a) iven Sandstome and fimerash) 5.5.4.5. dss se otulacdduee deanne 330 
2e, (Se PME MSIE CV OCIISLOWC, 025 c. otras neces toed s de cos ce Tae hoes 150 
A(5) Nodular and banded rhyolite, with ash-bands ...... 113 
LEAS ROT UT Sag eee ie ce mene aegis tees Biv RAN Ee EME et 390 
my Calearcous fags amd: Slates’ 2225.5. c.sdhocn.. a wossteatecs 7d 
ea(S), Coarse ashy conglomerate... 20... .0.0.cchiedert ganbee epee 56 
Maco):  Greenstoneunttusive im. A:(S)i oo. oie: .cs.c. ssh. st nce 120 
Emel E aleuuur ple ashe: oseset,. cuees coos zeey cost ensnoa de Joes: 10 
PGW ee taper ianvOlikes oo. cena ka foc. yeh cae abrae, S scek tees 25 
Sh ZABLE AGES Wars NEI CE CA ee ee aT a Ae NE ea aA 16 
Megha Compach purple ash) 2.062250 cscssdsseades noes seccbooreess 40 
ev EE) aban Pler TMV ONLele cure cn atin. cde mietascen s wane ele, 25 
A (15) Ash, in places green, with large dark fragments ... 14 
A (16) Caleareous flags, with coral-layers and bands of 
COMPIOMICEALE F-series dal sess cote eo es tat eae 85 
CNY EB utplo rE hiyOnibe pepena cea 2a A tebicagh tales. bsseuklae a. 38 
DESY NS) Re SAA Ce ORNL Ge ene Ss OR iS ra Beinn tal 
Js Wd sip el tg 0) Cand ah 0) dealin ee ee Ree ee a eRe ele 130 
(20). Coarse ash, witleerit-bands: 2.0: .0).2..0....e:c0s.500es- DD 
wa (20) Caleareous flags and slates... 0.2.5. .2..2.6s0c08c0sde0se sees 0) 
ie) Pale coarse ash and Slates 2.00.5. 0.60.0. d.0-. 00 edee ieee 16 
A (23) Compact, light-green, banded ash ...................46 14 
POEs COA ESAs iNeed oa Ne aa Pha teash SSE ose Gols Mow coeeee te. 8 
Pm) pak ie ile Glare may. ots x. a atinaaaln se ies Be day bsdd Aceves 20 
* Quart. Journ. Geol. Soc. vol. xxxv (1879) p. 699. 
* Vol. i (1897) pp. 254-56. 
R 2 
