| | 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 | [386] |
| Atmosphere versus Ether | [389] |
| A Neglected Disinfectant | [392] |
| Another Disinfectant | [393] |
| Ensilage | [394] |
| The Fracture of Comets | [396] |
| The Origin of Comets | [398] |