LIST OF ILLUSTRATIONS
| FIG. | PAGE | |
| 1. | Photomicrographs of Brain-Tissue | [Frontispiece] |
| 2. | The Organs of the Chest and Abdomen | [xi] |
| 3. | Mucous Gland, Capillaries, and Connective-Tissue Spaces | [38] |
| 4. | Blood-Corpuscles | [60] |
| 5. | Spleen-Pulp, with Phagocytes | [81] |
| 6. | Duodenum and Neighbouring Organs | [99] |
| 7. | A Lobule of the Liver and Liver-Cells | [160] |
| 8. | The Diaphragm during Inspiration and Expiration | [172] |
| 9. | The Kidney | [197] |
| 10. | The Heart in Longitudinal Section | [218] |
| 11. | Horizontal Section of the Heart, showing its Valves | [225] |
| 12. | Section of the Wall of a Small Artery | [233] |
| 13. | Kymograph | [238] |
| 14. | Sphygmograph | [244] |
| 15. | Blood-Pressure Tracings | [245] |
| 16. | Minute Structure of Muscle-Fibres | [262] |
| 17. | The Biceps Muscle in Action | [286] |
| 18. | Electric Organ of Skate | [289] |
| 19. | Minute Structure of a Nerve-Fibre | [296] |
| 20. | Ganglion-Cells with Neuro-Fibrillæ of the Leech | [298] |
| 21. | The Development of the Granules of the Cerebellum | [304] |
| 22. | Tigroids and Neuro-Fibrillæ | [321] |
| 23. | Minute Structure of the Cortex of the Cerebellum | [339] |
| 24. | Minute Structure of the Cortex of the Cerebrum | [347] |
| 25. | Functional Areas of the Cortex of the Cerebrum | [352] |
| 26. | Taste-Bulbs | [368] |
| 27. | Horizontal Section of the Eye | [373] |
| 28. | Development of the Crystalline Lens | [374] |
| 29. | Purkinje’s Shadows of the Vessels of the Retina | [375] |
| 30. | Retina adapted for Obscurity and for Bright Light | [377] |
| 31. | Simultaneous Contrast | [383] |
| 32. | Formation of an Image on the Retina | [391] |
| 33. | The Form of the Eyeball in Short Sight, Normal Sight,and Long Sight | [392] |
| 34. | The Blind Spot | [394] |
| 35. | An Optical Illusion | [398] |
| 36. | An Optical Illusion | [401] |
| 37. | An Optical Illusion | [402] |
| 38. | External, Middle, and Inner Ear | [411] |
| 39. | The Cochlea | [414] |
| 40. | The Organ of Corti | [415] |
| 41. | Nerves of the Corneal Epithelium | [424] |
| 42. | Touch-Corpuscles | [427] |
| 43. | Pacinian Corpuscle | [428] |
| 44. | The Glottis | [432] |
| 45. | The Larynx in Longitudinal Section | [433] |
| 46. | The Larynx from the Right Side | [435] |
NOTE ON THE FRONTISPIECE
Four photomicrographs of cells or parts of cells of brain-tissue, coloured by the chrome-silver method ([cf. p. 293]).
A. Cell of Purkinje from the cerebellum of a man aged 45. At the bottom of the photograph is seen the rounded cell-body, with the commencement of its axon. The summit of the cell-body bears an elaborately branched system of dendrites, spread out in the plane of the section.
B. A single basket-cell of the cortex of the cerebellum (very highly magnified). The oval cell-body gives origin to four dendritic processes which branch. Thorns are to be seen on the larger process which ascends on the right. From the same process, near its origin, springs a delicate axon which thickens as it proceeds to form a basket at the right hand lower corner of the photograph. Two other branches of the same axon, which form baskets around other Purkinje-cells, are faintly visible, although out of focus.
C. Seven or eight pyramids from the cortex of the cerebrum of a hedgehog. A little below the centre of the photograph is seen a large pyramid with a single thorny apical process which bifurcates, several basal dendrites and an axon. In the upper part of the photograph are seen the apical processes of a number of pyramids of which the bodies were not included in the section.