TRANSACTIONS OF THE SECTIONS. 79 
the northward, as Professor Hull has already shown occurred in England during 
that time*, and it is interesting to find the results of the same forces traceable here. 
Denudation following, resulted in a set of plains or edges of limestone, and troughs 
or basins of Coal-measures, all of which were overlapped by the deposition of 
Permian or Triassic beds. (A part of the country between the two coal-fields 
represents one of these limestone plains.) On subsequent denudation, and post- 
triassic faults occurring, some portions of the Coal-measures would be laid bare or 
saved beneath the newer formation, while in other places close by there would be 
an overlap of the newer rock on limestone, apparently as if the whole effect, 
faulting and all, on the Carboniferous rocks had been produced before the Triassic 
period. As the whole district is cut up by faults and rock exposures are few, the 
evidence of those flexures is now obscure; yet on the whole there is enough to 
justify this assumption, and in this way only can the phenomena observed be 
accounted for. 
In conclusion the author referred to the addition made to the paleontological 
knowledge of these coal-fields since the Government Survey of them was under- 
taken, he and his colleague, Mr. W. H. Baily, F.G.S., F.L.S., with Mr. E. Leeson, 
having obtained many shells, bivalves, Gonvatites, &c., together with plants and 
fish-remains, the discovery of the last being due to Mr. W. Molyneux, F.G.S., of 
Burton-on-Trent, who first pointed them out to the author. 
A Synopsis of these fossils, compiled from a list kindly furnished by Mr. Baily of 
the specimens which he has been able up to the present to examine, is appended. 
List of Fossils compiled from Mr. Baily’s Notes. 
PLANT. 
Sphenophyllum saxifragifolium. Lepidodendron selaginoides. 
Stigmaria ficoides. Calamites cannzeformis, 
Neeggerathia dichotoma. Lepidophyllum. 
Sagenaria rimosa, and Sigillaria. Lepidostrobus. 
Sphenopteris irregularis (latifolia). Pecopteris. 
—— tridactylites. 
Mo.uusca. CRUSTACEA. 
Brachiopoda. Ostracoda, 
Lingula squamiformis. Leperditia, sp. 
Athyris, sp. 
Lamellibranchiata, 
Sanguinolites attenuatus. VERTEBRATA. 
Modiola Macadami. Pisces. 
Anthracosia. Helodus planus ? 
Cephalopoda, Paleeoniscus. 
Goniatites crenistria. 
Orthoceras, sp. 
~ On the Age and Mode of Formation of Lough Neagh, Ireland. By Eowarp 
T. Harpay, F.C.S., F.R.GSL., of the Geological Survey of Ireland. 
After describing the position of Lough Neagh, one of the largest lakes in 
Europe, the author referred to the fact that its general direction agreed very 
fairly with that of the principal ice-flow which had glaciated the district, and 
might therefore be supposed to indicate a glacial origin. The object of the paper 
was to show that this is not so, but that the lake was formed long before the. 
Glacial period. 
The geology of the district was briefly described. On three sides of the lake lies 
the basalt, rising as it recedes into considerable altitudes; on the east and nevth- 
~* “On the Physical Features of Lancashire and Yorkshire,” by E. Hull, F.R.S., Quart. 
Journ. Geol. Soc. Lond. vol. xxiv. 
T Scales, palates, and spines, &c. only obtained. 
