Reports and Proceedings — Geological Society of London. 9L 



and Silurian rock-fragments abound in tbem, together with many 

 inclusions of Carboniferous Limestone. The group is shown to be 

 of the same age as the Pendine Syringothyris conglomerate and 

 the volcanic rocks of Weston-super-Mare, and its existence indicates 

 that the movement and disturbance in Mid-Avonian times extended 

 over a considerable area. 



The beds above the conglomerates are mainly limestones and 

 calcareous shales. Tbey are thrown into numerous sharp folds, 

 and are occasionally inverted. The highest beds seen ( Cyuthaxonia 

 Beds) are correlated with the Eastern Gower or Oystermouth Lime- 

 stone of the South- Western Province ; but the fauna agrees still more 

 closely, and is identical, with that of the higbest Avonian beds of the 

 Midlands of England, at Parkhill, Wetton, Thorpe Cloud, etc. The 

 disappearance by solution of a considerable thickness of limestone 

 is described. 



A list is given of the fossils from a large number of horizons in 

 the Rush Series (which is divided into the Zaphrentis, Megastoma, 

 and Gyathaxonia Beds), as well as of the fauna of the Curkeeu Hill 

 Limestone, near Loughshinny, the horizon of which is assigned to 

 the Upper DibunopJiylhim Zone, probably below the Cyathaxonia Beds. 



The paleeontological section deals only with Brachiopods and 

 Corals. In that part which deals with the Brachiopods the inter- 

 relationship of the various members of the more important gentes 

 is discussed in considerable detail. In the part which is devoted to 

 the Corals a new subgenus is suggested, and four new species are 

 described. 



Professor G. F. Wright, in exhibiting a map of the Lebanon 

 district, gave an interesting description of the evidence which he 

 found, in a recent journey to that district, as to the height and 

 extent of the terminal moraine. He remarked also that the water- 

 level in the Jordan Valley stood, in comparatively recent times, 

 750 feet higher than at present, and this he connected with the 

 glaciation of the area. Very small climatic changes would be 

 sufficient to start the Lebanon Glacier again. 



IL— January 10th, 1906.— J. E. Marr, Sc.D., F.R.S., President,. 

 in the Chair. The following communications were read : — 



1. " The Clay-with-Flints : its Origin and Distribution." Bv 

 Alfred John Jukes-Browne, B.A., F.G.S. 



Until recently the Clay-with-Flints has been regarded as being, 

 in the main, a residue from the slow solution of the Chalk. This 

 was the explanation proposed by Mr. W. Whitaker in 1864, 

 although he admitted that the deposit included some material 

 derived from the Eocene. Writing in 1865, Mr. T. Codrington 

 thought that an overlying stratum of clay or loam was essential 

 to the formation of Clay-with-Flints. Lastly, Charles Darwin ia 

 1881 seems to have taken it for granted that it was solely a residue 



