Group of Upper Silurian Star-fishes. 61. _Protaster Sedgwickii_. 62. Group of Upper Silurian Crinoids. 63. _Planolites vulgaris_. 64. Group of Upper Silurian Trilobites. 65. _Pterygotus Anglicus_. 66. Group of Upper Silurian _Polyzoa_. 67. _Spirifera hysterica_. 68. Group of Upper Silurian Brachiopods. 69. Group of Upper Silurian Brachiopods. 70. _Pentamerus Knightii_. 71. _Cardiola interrupta, C. fibrosa_, and _Pterinoea subfalcata_. 72. Group of Upper Silurian Univalves. 73. _Tentaculites ornatus_. 74. _Pteraspis Banksii_. 75. _Onchus tenuistriatus_ and _Thelodus_. 76. Generalised section of the Devonian rocks of North America. 77. _Psilophyton princeps_. 78. _Prototaxites Logani_. 79. _Stromatopora tuberculata_. 80. _Cystiphyllum vesiculosum_. 81. _Zaphrentis cornicula_. 82. _Heliophyllum exiguum_. 83. _Crepidophyllum Archiaci_. 84. _Favosites Gothlandica_. 85. _Favosites hemisphoerica_. 86. _Spirorbis omphalodes_ and _S. Arkonensis_. 87. _Spirorbis laxus_ and _S. Spinulifera_. 88. Group of Devonian Trilobites. 89. Wing of _Platephemera antiqua_. 90. _Clathropora intertexta_. 91. _Ceriopora Hamiltonensis_. 92. _Fenestella magnifica_. 93. _Retepora Phillipsi_. 94. _Fenestella cribrosa_. 95. _Spirifera sculptilis_. 96. _Spirifera mucronata_. 97. _Atrypa reticularis_. 98. _Strophomena rhomboidalis_. 99. _Platyceras dumosum_. 100. _Conularia ornata_. 101. _Clymenia Sedgwickii_. 102. Group of Fishes from the Devonian rocks of North America. 103. _Cephalaspis Lyellii_. 104. _Pterichthys cornutus_. 105. _Polypterus_ and _Osteolepis_. 106. _Holoptychius nobilissimus_. 107. Generalised section of the Carboniferous rocks of the North of England. 108. _Odontopteris Schlotheimii_. 109. _Calamites cannoeformis_. 110. _Lepidodendron Sternbergii_. 111. _Sigillaria Groeseri_. 112. _Stigmaria ficoides_. 113. _Trigonocarpum ovatum_. 114. Microscopic section of Foraminiferal limestone--Carboniferous, North America. 115. _Fusulina cylindrica_. 116. Group of Carboniferous Corals. 117. _Platycrinus tricontadactylus_. 118. _Pentremites pyriformis_ and _P. conoideus_. 119. _Archoeocidaris ellipticus_. 120. _Spirorbis Carbonarius_. 121. _Prestwichia rotundata_. 122. Group of Carboniferous Crustaceans. 123. _Cyclophthalmus senior_. 124. _Xylobius Sigillarioe_. 125. _Haplophlebium Barnesi_. 126. Group of Carboniferous _Polyzoa_. 127. Group of Carboniferous _Brachiopoda_. 128. _Pupa vetusta_. 129. _Goniatites Fossoe_. 130. _Amblypterus macropterus_. 131. _Cochliodus contortus_. 132. _Anthracosaurus Russelli_. 133. Generalised section of the Permian rocks. 134. _Walchia piniformis_. 135. Group of Permian _Brachiopods_. 136. _Arca antiqua_. 137. _Platysomus gibbosus_. 138. _Protorosaurus Speneri_. 139. Generalised section of the Triassic rocks. 140. _Zamia spiralis_. 141. Triassic Conifers and Cycads. 142. _Encrinus liliiformis_. 143. _Aspidura loricata_. 144. Group of Triassic Bivalves. 145. _Ceratites nodosus_. 146.