Sketch . 
Sketch . 
Section . , 
Sketch . , 
Fossils (18). 
Fossils (19). 
Fossils (20). 
Sketch . , 
Section . . 
Fossils (21). 
Sketch . . 
Sketch . . 
Sketch . . 
Section . . 
Fossils (22). 
Fossils (23). 
Sketch . . 
Sketch . . 
Section . . 
Fossils (24). 
Section . . 
Section . . 
Fossils (25). 
Section . . 
Fossils (26). 
Fossils (27). 
Fossils (28). 
Section . 
Sketch . . 
Section . . 
Fossils (29). 
Sketch . . 
Section . . 
Section . . 
Fossils (30). 
Fossils (31). 
Fossils (32). 
Fossils (33). 
Fossils (34). 
Fossils (35). 
Fossils (36). 
Fossils (37). 
Fossils (38). 
Fossils (39). 
Fossils (40). 
Fossils (41). 
Fossils (42). 
Fossils (43). 
Fossils (44). 
LIST OF ILLUSTEATIONS. xv 
Page 
Old Quarries in the Wenlock Limestone . . 116 
Dudley, from the Wren's Nest 117 
Across the Wren's Nest . „ ... 118 
The South End of the Wren's Nest 118 
Corals &c. of the Wenlock Limestone 119 
Corals of the Wenlock Limestone 120 
Corals of the Wenlock Limestone » . . 120 
Ludlow Castle .123 
Across the Ludlow Promontory - 124 
Starfishes of the Lower Ludlow Eocks 127 
Whiteway Head 128 
The Palmer's Cairn Landslip 129 
Upper Ludlow Eocks at the Bone Well 132 
Brecon Anticlinal of Ludlow Eocks, throwing off Old Eed Sandstone 137 
Crustacean and Fishes from the Passage-beds, Ludlow . . . . . 140 
Of the Uppermost Bone-bed, near Ludlow 141 
Silurian Eocks of Marloes Bay, dipping under the Old Eed Sand- 
stone of Hook Point, Pembrokeshire 143 
View of the Cliffs near St. Abb's Head , 149 
Silurian Eocks of the South of Scotland 150 
Track of a Crustacean . . 151 
From near Craighead to Dularg, Ayrshire 156 
Across the- Vale of Girvan at Dailly, Ayrshire 157 
Orthoceras Maclareni, from the Upper Silurian strata of the Pent- 
land Hills 160 
Diagram exhibiting the General Eelations of the Upper Silurian 
Eocks to the overlying Palaeozoic Strata in the Parish of Les- 
mahago 161 
Crustacea and Shells of the Uppermost Ludlow Eocks, Lanarkshire . 162 
Lower Silurian Shells from the North-western Highlands .... 165 
Annelide-Tubes from the North-west Highlands 166 
Generalized Section across the North of Scotland ....... 169 
Mountains of the West Coast of Sutherland and Eoss . . -. . . 170 
Across Scotland from the Coast of Eoss-shire to the Cheviot Hills . 172 
Lower Silurian Trilobites, Ireland 174 
The Sibyl Head (seen from the Western Ocean) 177 
Diagrammatic Section, showing the order, thickness, and litholo- 
gical character of the Eocks of the Dingle Promontory .... 178 
Across the Bins of Connemara and Killery Harbour 180 
Lower Silurian Zoophytes and Polyzoa . 188 
Lower Silurian Zoophytes and Polyzoa 189 
Glyptocrinus basalis, from Lower Silurian strata 190 
Lower Silurian Cystideans 191 
Lower Silurian Starfishes 191 
Lower Silurian Brachiopods 192 
Lower Silurian Brachiopods ... . 193 
Lower Silurian Brachiopods 194 
Lower Silurian Brachiopods . 194 
Lower Silurian Lamellibranchiata 196 
Lower Silurian Gasteropoda 197 
Lower Silurian Heteropod and Pteropod Mollusca 199 
Lower Silurian Cephalopoda 200 
Lower Silurian Cephalopoda 200 
Lower Silurian Track-marks, produced by Annelides &c 201 
