52 NATURAL HISTORY SOCIETY OF DUBLIN. 



coal of Werner. The circumstances are perfectly analogous to those just 

 described in the neighbouring Geneva Colliery, belonging to Mr. Ben- 

 jamin Edge, of Clonbroek House." u The numerous remains of Plants 

 collected in this coal district by Mr. Benjamin Edge, and his son, Mr. 

 John Edge, compared with other coal basins, show that this anthracite 

 coal does not belong to the culm horizon, or our first zone, but rather 

 to the commencement of the second or Sigillaria zone." The following 

 were distinguished in it : — Gyromyces Ammonia, Gop. ; Calamites cannce- 

 formis, Schl. ; Asterophyllites foliosus, Lindl. and Hutt. ; Sphenophyllum 

 saxifragcefolium, Stern, sp. ; Sphenopteris latifolia, Brong. ; Schizopteris 

 anomala, Brong.; Neuropteris gigantea, St. ; Alethopteris lonehitidis, St. ; 

 Sagenaria diehotoma, St. ; Sag. elegans, Lindl. ; Sag. rimosa, St., with 

 Lepidophyllum and Lepidostrobus ; Aspidiaria undulata, St. ; Sigillaria 

 tesselata, Brong. ; Sig. intermedia, Brong. ; Stigmaria jicoides, var. 

 minor ; Cordactes borassifolius, St. sp. " In the North of Ireland, 

 where coal-bearing beds occur in the counties of Leitrim and Ferma- 

 nagh, as well as at Dungannon, in Tyrone, and Ballycastle, in An- 

 trim, they rest upon a thick sandstone formation, apparently represent- 

 ing the millstone grit, which separates them from the Carboniferous 

 Limestone ; and whilst in the whole of the South of Ireland the typical 

 anthacite, or Kilkenny coal, predominates, in the deposits of the North 

 of Ireland it is good gas coal." "The occurrence of the productive 

 coal formation at Ballycastle, on the northern coast of Ireland, is very 

 interesting, where it extends itself from Fair Head, in a westerly and 

 southerly direction, to a distance of about four miles, with a mean 

 breadth of about one and a half miles. It contains at Marlough Bay 

 six coal seams, from one to eight feet thick, of which four yield good 

 gas coal, whilst the two deeper are anthracite. These coal-bearing 

 beds appear to rest directly on the mica schist. As an additional charac- 

 teristic of the Irish coal fields, the following is a summary of the fossil 

 Plants which we had the opportunity of examining, partly in the admi- 

 rable collections of the Irish Museum, and in Sir R. Griffith's office at 

 Dublin, in the before mentioned collection of Messrs. B. and J. Edge, 

 at Clonbroek House, as well as among the waste heaps of the Castle- 

 comer coal field, in company with Mr. W. H. Baily, many of which are 

 deposited in the Royal Mineralogical Museum at Dresden : — 



"1. Gyromyces Ammonis on Asterophyllites foliosus, and on a fern 

 stem from the Leinster and Castlecomer coal fields in the Queen's 

 County. 



2. Calamites cannceformis, Sch. ; from Glenagoppul and Eoynes 

 Island, Limerick ; Jarrow and Geneva Collieries, near Castlecomer ; 

 Glengoole and Knockilonga Collieries, Tipperary. 



3. Calamites Suckoivi, Brong. ; from collieries in Limerick ; Knocki- 

 longa Colliery, Tipperary ; and Ballycastle, Antrim. 



4. Calamites approximatus, Schl.; from Glenagoppul, Limerick; 

 Knockilonga Colliery, Tipperary; Annagher Colliery, near Dungannon, 

 Tyrone. 



