282 Reports and Proceedings — Geological Societg of London. 



sections in the Loughshinny area. About 1,100 feet of Carboniferous 

 rocks are exposed. They consist mainly of limestone, but also include 

 a thick mass of conglomerate and many intercalated beds of shale and 

 chert. The rocks have been much folded, and to some extent faulted. 

 The lowest rocks belong to some part of the Bihimophyllum Zone, the 

 higher range througli Cyathaxonia Beds into Posidotiomya Limestones 

 and shales of Pendleside age. The Lane Conglomerate may be on or 

 near the horizon of the Rush Conglomerate. Local decalcification 

 has caused the more or less complete disappearance of some of the 

 Cyathaxonia and Posidonomya Limestones. The following table gives 

 the position and correlation of various members of the sequence : — 



Stratigraphical Zones. 



Louj^h shinny Black 

 Shales. 



Posidonomya Limestone 

 Group. 



Cijathaxonia Beds (base 

 not seen). 



(Gap) 

 DihunophijUum Limestone 



(Gap) 

 Holmpatrick Limestone. 

 Lane Conglomerate. 

 Lane Limestones. 



Th icJcncss 

 in feet. 



110 



260 



200 



(Gap) 

 100 



(Gap) 



ISO 



200 



60 



Falccontologieal Zones. 



Correlation xvith 

 the Mush area. 



Upper Posido7iomya 

 Zone. (Po) 



Lower Posidonomya 

 Zone. (Pi) 



Cyathaxonia subzone 

 (locally divisible into 

 'D U 



but overlapping). 



Upper Dibanophyllum 

 Zone. (D2) 



? D (of unknown 

 position). 



Not represented. 



Do. 



Cyathaxonia Beds 

 of Bathing Place 

 and Giants Hill. 



Curkeen Hill 

 Limestone. 



? Carlyan Lime- 

 stone. 



PRush Conglom- 

 erate Group. 



? Bush Slates (top 

 part only). 



The region was close to an old shore-line of the Carboniferous 

 Limestone Sea, the actual position of which appears to have been 

 almost parallel to, and a short distance seaward of, the present coast- 

 line between Rush and Skerries. 



The paper closes with faunal lists from the various subdivisions and 

 exposures, and an account of the faunal succession and correlation, 

 both by the second author. 



2. "A l^oie on the Petrology and Physiography of Western Liberia 

 (West Coast of Africa)." By John Parkinson, M.A., F.G.S. 



The country is low-lying, with a gradual rise northward from shoi'e- 

 level, and rivers mature in character with alluvial flats raised above 

 flood-level. Where the River Tuma falls into the River St. Paul the 



