Erect Stem of a Sigillaria, with Roots 136 39. A Terminal Branch of a Lepidodendron 138 40. Lepidostrobi, the Fruit of Lepidodendra 141 41. Stems of Halonia and Knorria, from the Coal Formation 144 42. Asterophyllites equisetiformis 147 43. Fig. 1, Sphenophyllum Schlotheimii 148 2, Sphenophyllum erosum 148 44. Fossil Fruits, or Seed Vessels 149 45. Foliage and upper part of the Stem of Cycas revoluta (recent) 150 46. Part of a leaf of Pterophyllum comptum 152 47. Part of a leaf of Zamites pectinatus 153 48. Fruit of Zamites Mantellii 154 49. Fossil Fruits of Cycadeous Plants 156 50. Mantellia nidiformis 157 51. Mantellia cylindrica 158 52. Clathraria Lyellii, inner Axis of the Stem of 159 53. Clathraria Lyellii, Stem of 160 54. Clathraria Lyellii, part of Stem of 161 55. Clathraria Lyellii, Petiole of 161 56. Clathraria Lyellii, summit of Stem, with petioles 162 57. Clathraria Lyellii, water-worn Stem of 163 58. Fragment of Coniferous Wood in Flint 174 59. Fig. 1, Part of a Branch of Araucaria peregrina 176 2, Calamites nodosus, with foliage 176 60. Walchia hypnoides 178 61. Abietites Dunkeri 179 62. Thuites Kurrianus 180 63. Nipadites and other Fossil Fruits from the Isle of Sheppey 188 64. Fossil Fruits from the Isle of Sheppey 189 65. Fossil Wood perforated by Teredines 193 66. Fossil Fresh-water Plants 196 67. Fossil Fruits and Flower 198 68. Imprints of Dicotyledonous leaves in Gypseous Marlstone 201 (_lllustrative of Fossil Zoology._)