232 Reports & Proceedings — Geologists Association. 



Ordovician folding. Simple character. Its importance and main 

 lines. 



Interference of the two systems. 



Post-Carboniferous movements. The Wastwater fault. Con- 

 sideration of the effects of faults in highly folded strata. Question 

 of tear- faults. 



March 5, 1920.— The President, Mr. W. Whitaker, F.R.S., in 



the chair. 



" The Geology of the Cardiff District, with special reference to 

 the Easter Excursion." By Professor A. Hubert Cox, M.Sc, Ph.D., 

 F.G.S. 



Geological history of the district. The general succession and 

 structure. Continued instability and proximity to shore -lines. 

 Effects thereof on the character and distribution of the Palaeozoic 

 deposits. The Armorican folding. The Coalfield Syncline and the 

 Cardiff Anticline. The pre-Triassic surface. The Mesozoic uncon- 

 formity and overlap. Great lateral variation of the Mesozoic rocks. 

 The drainage system and recent deposits. Main scenic features. 



" Supplementary Notes on Shooters Hill." By A. L. Leach, 

 F.G.S. 



I. — A section in London Clay. 



II. — The Minerals of the Shooters Hill Gravel. Results of an 

 examination by Mr. G. Macdonald Davies, M.Sc, F.G.S. 



March 26, 1920.— The President, Mr. W. Whitaker, F.R.S., in the 



chair. 



" The Geography and Geology of N.E. France and adjoining 

 areas, with special reference to the War Zone of the Western Front." 

 By Evan W. Small, M.A., B.Sc, F.G.S. 



General features of the structural geography of France. The 

 massif- central and its historical influences : the regions of the 

 Langue d'oc and the Langue d'oil. The pre-Permian Armorican and 

 Variscan highlands. The young folded mountains of the Alps and ■ 

 Pyrenees. The belted relief of N.E. France. The Cotswold-Langres 

 syncline. Relation of structure and form in upland belts. The 

 concentric scarps as natural defences. The geology of the Vosges 

 and the Faucilles Mountains. The folded Jura and the tabular 

 Jura. The Oligocene trough valley of the Rhine. The eastern 

 frontiers of F]:ance in 1812 and 1914. The chain of fortresses. The 

 mineral resources of Alsace-Lorraine. The Sarre coal-field. The 

 Ardennes and beyond. The gorges of the Meuse and Moselle. The 

 porphyroids of the Meuse Valley. Some examples of river capture. 

 The Eocene lowlands of Flanders. The Chalk uplands of Normandy, 

 Picardy, and Artois. The Jurassic inliers of the Boulonnais and the 



