| PAGE |
| The Fuel of the Sun | 7 |
| Dr. Siemens’ Theory of the Sun | 38 |
| Another World Down Here | 41 |
| The Origin of Lunar Volcanoes | 50 |
| Note on the Direct Effect of Sun-Spots on Terrestrial Climates | 56 |
| The Philosophy of the Radiometer and its Cosmical Revelations | 59 |
| On the Social Benefits of Paraffin | 65 |
| The Solidity of the Earth | 72 |
| A Contribution to the History of Electric Lighting | 75 |
| The Formation of Coal | 88 |
| The Solar Eclipse of 1871 | 93 |
| Meteoric Astronomy | 104 |
| The “Great Ice Age” and the Origin of the “Till” | 112 |
| The Barometer and the Weather | 140 |
| The Chemistry of Bog Reclamation | 159 |
| Aerial Exploration of the Arctic Regions | 170 |
| The Limits of our Coal Supply | 189 |
| “The Englishman’s Fireside” | 213 |
| “Baily’s Beads” | 221 |
| The Coloring of Green Tea | 223 |
| “Iron Filings” in Tea | 227 |
| Concert-Room Acoustics | 231 |
| Science and Spiritualism | 237 |
| Mathematical Fictions | 251 |
| World-Smashing | 257 |
| The Dying Trees in Kensington Gardens | 261 |
| The Oleaginous Products of Thames Mud: Where they Come from and Where they Go | 266 |
| Luminous Paint | 269 |
| The Origin and Probable Duration of Petroleum | 273 |
| The Origin of Soap | 281 |
| Oiling the Waves | 285 |
| On the so-called “Crater Necks” and “Volcanic Bombs” of Ireland | 290 |
| Travertine | 296 |
| The Action of Frost in Water-Pipes and on Building Materials | 300 |
| The Corrosion of Building Stones | 308 |
| Fire-Clay and Anthracite | 312 |
| Count Rumford’s Cooking-Stoves | 320 |
| The “Consumption of Smoke” | 327 |
| The Air of Stove-Heated Rooms | 332 |
| Ventilation by Open Fireplaces | 337 |
| Domestic Ventilation | 341 |
| Home Gardens for Smoky Towns | 351 |
| Solids, Liquids, and Gases | 367 |
| Murchison and Babbage |
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