LIST OF PLATES. 
PLATE To face Page 
I. Archaeopteryx macrurus Frontispiece 
11. Didymodon Vauclusianum, Equus macrognathus, and Equiis 
Devillii 8 
III. Equus Chilensis, Equus macrogtiathus, Equus Devillii, Holoptychius 
and Glyptolepis Scales 28 
IV. Map of the Greensand Sea 50 
y. Coal-Measure Mountains of Arigna Valley 81 
VI. Map of Arigna Coal-fields 85 
VII. Parallel Roads of Glen Roy 121 
VIII. Upper Chalk Cliffs of Kingsdown 154 
IX. Ptychodus polygyrus 161 
X. Ammonites varians and Pleurotomaria perspectiva 197 
XI. Ripple-drift, Structure in Mica-schist 201 
XII. Itybodus Dubrisiensis, N.s 241 
XIII. Dolichosaurus longicollis 207 
XIV. Forarainifera from the Chalk of Kent 234 
XV. Map of Wealden Area of Kent, Surrey, and Sussex 281 
XVI. Ideal Section of La Saleve 321 
XVII. Section of the Brezon 326 
XVIII. Echinothuria floris, N.s 330 
XIX. Sphenopteris flavicans 361 
XX. Stricklandia acuminata 395 
XXI. Cretaceous Terebratulse ; and Pachyrhizodus glyphodus, N.s. . . 401 
XXII. Fossil Birds ; Facsimiles from Mylius, nermann, and Ritter . . . 415 
XXIII. Fossil Birds ; Facsimiles from Kircher and Buttner 415 
XXIV. Fossil Birds ; Facsimiles from Wolfart, Kircher, Retzius, and Ritter 450 
