Devon and Comwallf Belgium, the Eifel, 8fc. 285 



Kerry, Cork, and Waterford, and of which I have given 

 sufficient descriptions elsewhere*. 



In following Mr. Griffith's progress thus far, what is the 

 result ? It amounts to this: that with the exception of the east- 

 ern part of Waterford lying between the Monavoullagh range 

 and the coast, and the southern part of Cork lying south of 

 the line drawn from near Dursey island past the head of 

 Bantry bay to Ringabella inlet, both of which (coloured grey) 

 are referred to an older transition series or to a Silurian series; 

 all the rest of the schistose and conglomerated rocks, extend- 

 ing from the county of Waterford on the east through that of 

 Cork into and through Kerry on the west (coloured purple), 

 are viewed, and designated by Mr. Griffith in different parts 

 of his communications, as the old red sandstone formation, 

 as a newer transition series, as a Silurian series, (all these 

 three being also called an old red sandstone series), and 

 lastly, as an older transition series; while all the bands of 

 limestone included in these schistose and conglomerated 

 rocks, from the limestone band in the valley of the Bride on 

 the north, to that occurring in Bantry bay on the south, are 

 referred to the carboniferous limestone, although admitted to 

 be in direct association with the rocks by which they are 

 boundedf. 



All this is undoubtedly sufficiently perplexing to a geolo- 

 gical inquirer, since it leaves him no secure footing anywhere. 



I now turn to the sections; yet another anomaly claims 

 previous attention. All the old red sandstone tracts lying 

 north of the city of Limerick, as those of the Bilboa and 

 Slieve Bloom mountains, similar districts in the counties of 

 Clare and Galway, and others yet more north, are coloured 

 reddish and yellowish brown ; and with this I do not quarrel 

 further than that the adoption of two colours to designate the 

 same formation seems superfluous, making that to appear com- 

 plex which is simple, it being well known that both the colours 

 and composition of the old red sandstone formation are very 

 variable ; and as to occasional interstratification on the bor- 

 ders with the carboniferous limestone, that may be very well 

 expressed by words. The anomaly I advert to is this, that 

 the old red sandstone of the extensive range of the Gaultees 

 should be coloured as a newer transition series (purple), while 



* Geol. Trans., vol. v., second series. Memoir on the South of Ireland, 

 generally in §§ 8 and 15, and in particular in §§ 7 to 33, and §§34 to 41. 



\ These are the legitimate inferences deducible from the " Outline," 

 with its map and the three later written communications. The various 

 modifications and alterations given further to these views, as designated by 

 the new map, I have already adverted to in preceding notes. 



