Geological Section of Yorkshire 35 Calymene Blumenbachii 41 Cephalaspis 44 Labyrinthodon 57 Snake-necked Marine Lizards 59 Megalosaurus Bucklandi 61 Bat-lizards 62 Hylaeosaurus armatus 63 Mammoth 74 Moho 84 Germination of Scarlet-runner 114 Diagram of Bean 116 " Fern 117 " Hawkmoth 119 " Polype 120 " Cow 121 Leaf-scars of Tree-fern 132 Roots of Iriartea 139 Traveller's Tree 148 Corm of Gladiolus 153 Section of Lily-bulb 157 Testudinaria 159 Encephalartos 162 Twig of Tulip-tree 167 Young Plant of Loranthus 171 Silk-cotton Tree 175 Section of Exogenous Tree 179 Muricated Madrepore 185 Organ-pipe 187 Comatula and Young 194 Serpula 200 Goliath Beetle and Pupa case 206 Larva of Case-fly 209 Melicerta 210 Lepas 218 Botryllus 224 Clavagella 226 Dione Veneris 228 Murex tenuispina 233 Scale of Gilt-head 242 Plates of Tortoise 251