| PLATE |
| I. | Portrait of J. C. Adams | | To face | page | 22 |
| II. | Portrait of A. Graham | | " | " | 22 |
| III. | Portrait of U. J. Le Verrier | | " | " | 60 |
| IV. | Portrait of J. G. Galle | | " | " | 60 |
| V. | Corner of the Berlin Map by the use of which Galle found Neptune | | " | " | 82 |
| VI. | Astronomers Royal | | Frontispiece |
| VII. | Great Comet of Nov. 7, 1882 | | To face | page | 122 |
| VIII. | The Oxford New Star | | " | " | 142 |
| IX. | Nebulosity round Nova Persei | | " | " | 146 |
| X. | Sun-spots at Greenwich, Feb. 18 and 19, 1894 | | " | " | 158 |
| XI. | Sun-spots at Greenwich, Feb. 20 and 21, 1894 | | " | " | 162 |
| XII. | Number of Sun-spots compared with Daily Range of Magnetic Declination and Daily Range of Magnetic Horizontal Force | | " | " | 164 |
| XIII. | Greenwich Magnetic Curves, 1859-60 | | " | " | 166 |
| XIV. | Greenwich Magnetic Curves, 1841-1860 | | " | " | 166 |
| XV. | Sun-spots and Turns of Vane | | " | " | 170 |
