LIST OF ILLUSTRATIONS
| PAGE | |
| Flamsteed, the First Astronomer Royal | [Frontispiece] |
| The New Building | [7] |
| General View of the Observatory Buildings from the New Dome | [12] |
| Flamsteed's Sextant | [36] |
| The Royal Observatory in Flamsteed's Time | [44] |
| The 'Camera Stellata' in Flamsteed's Time | [52] |
| Edmund Halley | [61] |
| Halley's Quadrant | [69] |
| James Bradley | [72] |
| Graham's Zenith Sector | [77] |
| Nathaniel Bliss | [83] |
| Nevil Maskelyne | [87] |
| Hadley's Quadrant | [91] |
| John Pond | [96] |
| George Biddell Airy, Astronomer Royal | [103] |
| The Astronomer Royal's Room | [110] |
| The South-east Tower | [115] |
| W. H. M. Christie, Astronomer Royal | [121] |
| The Astronomer Royal's House | [127] |
| The Courtyard | [130] |
| Plan of Observatory at Present Time | [134] |
| The Great Clock and Porter's Lodge | [147] |
| The Chronograph | [158] |
| The Time-desk | [164] |
| Harrison's Chronometer | [165] |
| The Chronometer Room | [167] |
| The Chronometer Oven | [171] |
| The Transit Pavilion | [174] |
| 'Lost in the Birkenhead' | [179] |
| The Transit Circle | [189] |
| The Mural Circle | [195] |
| Airy's Altazimuth | [208] |
| New Altazimuth Building | [211] |
| The New Altazimuth | [213] |
| The New Observatory as seen from Flamsteed's Observatory | [219] |
| The Self-registering Thermometers | [235] |
| The Anemometer Room, North-west Turret | [240] |
| The Anemometer Trace | [243] |
| Magnetic Pavilion—Exterior | [246] |
| Magnetic Pavilion—Interior | [248] |
| The Dallmeyer Photo-heliograph | [254] |
| Photograph of a Group of Sun-spots | [259] |
| The Great Nebula in Orion | [269] |
| The Half-prism Spectroscope on the South-east Equatorial | [273] |
| The Workshop | [276] |
| The 30-inch Reflector with the New Spectroscope attached | [278] |
| 'Chart Plate' of the Pleiades | [286] |
| The Control Pendulum and the Base of the Thompson Telescope | [289] |
| The Astrographic Telescope | [291] |
| The Driving Clock of the Astrographic Telescope | [294] |
| The Thompson Telescope in the New Dome | [297] |
| The Nebulæ of the Pleiades | [300] |
| Double-star Observation with the South-east Equatorial | [308] |
| The South-east Dome with the Shutter Open | [314] |
GENERAL VIEW OF THE OBSERVATORY BUILDINGS FROM THE NEW DOME.
(From a photograph by Mr. Lacey.)