CONTENTS 
CHAPTER XXIX 
The Carboniferous Volcanoes, of England 
The North of England : Dykes, Great Whin Sill— The Derbyshire Toadstones— The Isle 
of Man — East Somerset — Devonshire 
CHAPTER XXX 
The Carboniferous Volcanoes of Ireland 
Kings County The Limerick Basin — The Volcanic Breccias of Doubtful Age in County 
Cork 
37 
BOOK VII 
THE PERMIAN VOLCANOES 
CHAPTER XXXI 
The Permian Volcanoes of Scotland 
Geographical Changes at the Close of the Carboniferous Period— Land and Inland-Seas 
ot Permian time — General Characteristics and Nature of the Materials erupted — 
Structure of the several Volcanic Districts: 1 . Ayrshire, Nithsdale, Annandale ; 
2. Basin of the Firth of Forth ........ 53 
CHAPTER XXXII 
Permian Volcanoes of England 
The Devonshire Centre — Eruptive Rocks of the Midland Coal-fields . 
94 
