24 Mr. Weaver on the Geological Relations of the South of Ireland. 



* I Cork and Black Rock '. 



-„ ,.. . j^ Localities in In other 



(Conchtfera-conunued) ^^^^^^ of Ireland. Transition Series. 



Cardium hibernicum, (Sow. T. 82, fig. 1,3.) ■ 

 Pleurorhynchus hibernicus of Phillips ..... 



Polyparia. 



Cyathophyllum Cork. 



Favosites Little Island. 



Retepora Black Rock and Cork. 



rf Eifel; Mont Chatou 



Amplexus coralloides, (Sow. T. 72.) * : Cork. \ ^^^ AWa'inr (New 



LYork.) 

 Crinoidea. 



The Actinocrinites 30-dactylus *l t Eifel. 



And many other crinoidal remains occur in 



fragments in the Cork limestones generally. 



To this list I have to add that casts, apparently derived from the concavity of vertebrae offish, 

 have also occurred in the Cork limestone ; and which were, I believe, first recognised as such by 

 the late Mr. J. S. Miller. 



Metalliferous Relations of the Transition Tract". 

 (a.) In the greywacke and slate districts. 



(34.) The metalliferous indications appearing on apart of the Waterford 

 south coast, lying immediately east and west of the Bonmahon river (§. 18.) have 



Phillips gives the following list. (See Encyclopedia Metropolitana, art. Geology, pp. 577 and 

 605.) 



Transition. Carboniferous. 



Terebratula Mantiae, (Sow. T. 277, fig. 1.) f Ems ; Blankenheim . . * Ireland. 



T. platyloba, (Sow. T. 496, fig. 5, 6.). . t Plymouth + CHthero. 



T. plicatella, (Dalman) t Plymouth ; Gottland . . J Ratingen, (Von 



Dechen.) 



T. diodonta, (Dalman) f Eifel ; Gottland I Ratingen, (Von 



Dechen.) 

 And according to Von Dechen, T. affinis,1 f South of Ireland; Dud- f J Derbyshire ; 

 (Sow. T. 324, fig. 3,) T. prisca, (Schlot. [> ley ; Plymouth ; Eifel J Liege; also*But- 



T. 17, fig. 2.) J Bensberg; Gottland.. |_ tevant, (Wright.) 



> This is not now considered a Cardium. Professor Phillips brings it under a new genus, named 

 by him, as above, Pleurorhynchus. The common form in which this shell appears is as figured by 

 Sowerby ; but in three instances I have found attached to the broader end of the shell a flattened 

 rim round its border, while from the projecting part of the broad end proceeds a long tubular spi- 

 nous process. Viscount Cole informs me he has seen this process in a large individual, extending 

 to the length of three or four inches. 



* I have long been persuaded of the importance of placing upon record an account of the geo- 

 logical circumstances of mines, for independently of the light they assist in throwing on the phy- 

 sical structure of the earth, they afford practical information to the miner and the landed proprietor, 

 and may often prevent a wasteful application of capital. 



This latter evil might be remedied to a certain extent, if a legislative enactment were made. 



