X STRATIGRAPHICAL GEOLOGY 



CHAPTER V 



THE CAMBRIAN SYSTEM 



I'ACE 



A. Nomenclature and Classification B. Life of the Period C. 

 British Cambrian Rocks : Wales, Midland Counties, Lake 

 District and Isle of Man, Ireland, Scotland D. The Cambrian 

 of Northern Europe : France, Iberian Peninsula, Belgium 

 and the Ardennes, Scandinavia, Russia, Germany and 

 Bohemia E. European Geography and Conditions of Deposi- 

 tion References ......... 70 



CHAPTER VI 



THE ORDOVICIAN SYSTEM 



A. Nomenclature and Divisions B. Life of the Period C. 

 British Ordovician Rocks : Wales, Shropshire, Cumberland 

 and Westmoreland, Scotland, Ireland D. Some European 

 Areas : France, Spain and Portugal, Belgium, Bohemia, 

 Scandinavia, Russia E. Conditions of Formation 

 References .......... 109 



CHAPTER VII 



THE SILURIAN SYSTEM 



A. Nomenclature and Divisions B. Life of the Period C. 

 British Silurian Rocks : Typical Silurian Area, Wales, 

 Westmoreland, South of Scotland, Ireland D. Continental 

 Equivalents : Scandinavia, Russia, Bohemia, Germany, 

 Belgium, France, Pyrenees, Spain and Portugal E. Condi- 

 tions of Deposition References ...... 153 



CHAPTER VIII 



DEVONIAN AND OLD RED SANDSTONE SYSTEM 



General Classification I. The Devonian Facies A. The Marine 

 Fauna B. British Devonian Rocks : Devon and Cornwall, 

 The South of Ireland C. Devonian of the Continent : France, 

 Spain, The Ardennes, Germany, Bohemia, Poland and Russia 

 II. The Old Red Sandstone Facies A. Flora and Fauna 

 B. Stratigraphy of the Old Red Sandstone : Wales, Scotland, 

 North of Ireland^ Norway, Arctic Regions C. Geography and 

 History of the Period References 193 



