| PAGE | ||
| 1. | Internal ridge of hyoid plate of Asterolepis | 31 |
| 2. | Shagreen of Raja clavata:—of Sphagodus | 54 |
| 3. | Scales of Acanthodes sulcatus:—shagreen of Scyllium stellare | 55 |
| 4. | Scales of Cheiracanthus microlepidotus:—shagreen of Spinax Acanthias | 56 |
| 5. | Section of shagreen of Scyllium stellare:—of scales of Cheiracanthus microlepidotus | 56 |
| 6. | Scales of Osteolepis microlepidotus:—of an undescribed species of Glyptolepis | 57 |
| 7. | Osseous points Of Placoid Cranium | 65 |
| 8. | Osseous centrum of Spinax Acanthias:—of Raja clavata | 67 |
| 9. | Portions of caudal fin of Cheiracanthus:—of Cheirolepis | 69 |
| 10. | Upper surface of cranium of Cod | 72 |
| 11. | Cranial buckler of Coccosteus | 74 |
| 12. | Cranial buckler of Osteolepis | 75 |
| 13. | Upper surface of head of Osteolepis | 77 |
| 14. | Under surface of head of Osteolepis | 79 |
| 15. | Head of Osteolepis, seen in profile | 80 |
| 16. | Cranial buckler of Diplopterus | 81 |
| 17. | Ditto | 82 |
| 18. | Palatal dart-head, and group of palatal teeth, of Dipterus | 83 |
| 19. | Cranial buckler of Dipterus | 85 |
| 20. | Base of cranium of Dipterus | 86 |
| 21. | Under jaw of Dipterus | 87 |
| 22. | Longitudinal section of head of Dipterus | 88 |
| 23. | Section of vertebral centrum of Thornback | 92 |
| 24. | Dermal tubercles of Asterolepis | 95 |
| 25. | Scales of Asterolepis | 96 |
| 26. | Portion of carved surface of scale | 96 |
| 27. | Cranial buckler of Asterolepis | 98 |
| 28. | Inner surface of cranial buckler of Asterolepis | 99 |
| 29. | Plates of cranial buckler of Asterolepis | 102 |
| 30. | Portion of under jaw of Asterolepis | 103 |
| 31. | Inner side of portion of under jaw of Asterolepis | 104 |
| 32. | Portion of transverse section of reptile tooth of Asterolepis | 105 |
| 33. | Section of jaw of Asterolepis | 106 |
| 34. | Maxillary bone? | 108 |
| 35. | Inner surface of operculum of Asterolepis | 109 |
| 36. | Hyoid plate | 110 |
| 37. | Nail-like bone of hyoid plate | 111 |
| 38. | Shoulder plate of Asterolepis | 112 |
| 39. | Dermal bones of Asterolepis | 113 |
| 40. | Internal bones of Asterolepis | 114 |
| 41. | Ditto | 115 |
| 42. | Ischium of Asterolepis | 116 |
| 43. | Joint of ray of Thornback:—of Asterolepis | 117 |
| 44. | Coprolites of Asterolepis | 118 |
| 45. | Hyoid plate of Thurso Asterolepis | 124 |
| 46. | Hyoid plate of Russian Asterolepis | 127 |
| 47. | Spine of Spinax Acanthias:—fragment of Onondago spine | 143 |
| 48. | Tail of Spinax Acanthius:—of Ichthyosaurus tenuirostris | 172 |
| 49. | Port Jackson Shark (Cestracion Phillippi) | 177 |
| 50. | Tail of Osteolepis | 195 |
| 51. | Tail of Lepidosteus osseus | 196 |
| 52. | Tail of Perch | 197 |
| 53. | Altingia excelsa (Norfolk-Island Pine) | 212 |
| 54. | Fucoids of the Lower Old Red Sandstone | 216 |
| 55. | Two species of Old Red Fucoids | 217 |
| 56. | Fern (?) of the Lower Old Red Sandstone | 219 |
| 57. | Lignite of the Lower Old Red Sandstone | 221 |
| 58. | Internal structure of lignite of Lower Old Red Sandstone | 223 |