LIST OF WOODCUT ILLUSTRATIONS. 



FIG. PAGE 



1. Structure of the Star-fish, after Tiedemann - - 37 



2. External aspect of Aplysia, after Rang - 38 



3. Structure of Aplysia, after Cuvier - - 40 



4. Section of Cockchafer, after Strauss-Durckheim .... 42 



5. Comparative view of the base of the Skull of Man, and of the Orang Outan, 



after Owen - ... - 61 



6. Comparative view of the Skeletons of Man and the Orang, after Owen - 62 



7. Structure of Nerve-tubes, after Wagner ..... 91 



8. Primitive fibres and globules of ganglia, after Wagner 92 



9. Primitive fibres and ganglionic globules of Human brain, after Purkinje - 92 



10. Nervous system of Aplysia, after Cuvier - ... 106 



11. Nervous system of Larva of Sphinx Ligustri, after Newport - - 108 



12. Portion of Ganglionic tract of Polydesmus maculatus, after Newport - 109 



13. Parts of Nervous System of Articulata, after Newport - 113 



14. Stomato-gastric system of Gryllotalpa vulgaris, after Brandt - 114 



15. View of the Great Sympathetic Nerve - 120 



16. Nervous centres in Frog, after Leuret ..... 123 



17. Transverse sections of Spinal Cord at different points, after Solly - - 123 



18. A transverse section of Spinal Marrow - - - 124 



19. Structure of the Spinal Cord, according to Stilling - - - 125 



20. A posterior superior view of the Pons Varolii, Cerebellum, &c. - - 127 



21. A posterior view of ;he Medulla Oblongata ----- 127 



22. An anterior view of the Medulla Oblongata ----- 128 



23. Course of the Motor tract, after Sir C. Bell - - - 129 



24. Course of the Sensory tract, after Sir C. Bell - - 130 



25. A lateral view, of the Spinal Marrow, &c., of a new-born infant - - 131 



26. A posterior view of the Medulla Spinalis ----- 131 



27. Brains of Fox-Shark, Cod, and Pike, after Leuret - - - 159 



28. Human Embryo, showing rudiments of Encephalon, after Wagner - - 160 



29. Brain of Turtle, after Solly - ----- 161 



30. Brain of Buzzard, after Leuret ..... 161 



31. Brain of Human Embryo, at 12th week, after Tiedemann - 162 



32. Brain of Rabbit, after Leuret - 162 



33. Base of the Cerebrum and Cerebellum, with their nerves - - - 163 



34. First pair, or Olfactory Nerves ..... 164 



35. Portio Mollis of Seventh Pair, or Auditory Nerve - - - 167 



36. Diagram of the distribution of the Fifth Pair - - 168 



37. Distribution of the Fifth Pair .... - 168 

 '38. Diagram of the distribution of the Facial Nerve .... 170 



39. Diagram of the distribution of the Eighth Pair .... 172 



40. Distribution of the Glosso-Pharyngeal, Pneumogastric,and Spinal Accessory 



Nerves, or Eighth .Pair - - - - 172 



41. Course and distribution of the Hypo-Glossal or Ninth Pair - - 181 



42. View of the Third, Fourth, and Sixth Pair - - - - 183 



43. Longitudinal Section of Eye - ... 242 



44. Horizontal Section of Eye Ball - - - 243 



45. Magnified view of outer surface of Retina of Frog, after Treviranus - 245 



46. Do. of inner surface ..... 245 



47. Portion of the Retina of an Infant, magnified 246 



48. Imaginary Plan of the Cochlea - 257 



49. Axis of Cochlea and Lamina Spiralis - 257 



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