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bestowed upon this little work for nearly ten years, so much useful information has been supplied by scientific friends, and so minute a revision has been made of every answer, that it is no presumption to express a hope that this “Guide to the Scientific Knowledge of Things Familiar” will become generally useful and acceptable, not only to the young, but to those advanced to maturer life.
In this work some questions occur more than once, because they serve to illustrate different principles; and whenever cognate questions occur, the answers have been rendered as similar as possible, in order to assist the memory of the learner.
SUBJECTS OF THE CHAPTERS.
| PART I.—HEAT. | ||
| PAGE | ||
| I. | The Sun a source of heat | 2 |
| II. | Electricity a source of heat | 3 |
| Thunder and lightning | 3–29 | |
| III. | Chemical action a source of heat | 30 |
| III.—Combustion | 36 | |
| IV.—Smoke and smoky chimneys | 59 | |
| V.—Lamps and candles | 74 | |
| VI.—Animal heat | 83 | |
| VII. | Mechanical action a source of heat | 95 |
| VII.—Percussion | 95 | |
| VIII.—Friction | 98 | |
| VIII.—Compression | 102 | |
| IX. | Effects of heat | 103 |
| X.—Expansion | 103 | |
| XI.—Liquefaction | 126 | |
| XI.—Vaporization (clouds) | 127 | |
| XII.—Evaporation | 156 | |
| XIII. | Communication of heat | 164 |
| XIII.—Conduction | 164 | |
| XIV.—Absorption | 184 | |
| XV.—Reflection | 192 | |
| XVI.—Radiation (dew) | 195 | |
| XVII.—Convection (boiling) | 231 | |
| PART II.—AIR. | ||
| XVIII. | Air | 240 |
| Rust | 257 | |
| Tarnish | 259 | |
| XIX. | Carbonic acid gas | 264 |
| Froth. Effervescence. Fermentation, &c. | 269 | |
| XX. | Carburetted hydrogen gas | 279 |
| Fire damp | 280 | |
| Safety lamp | 281 | |
| XXI. | Phosphuretted hydrogen gas | 283 |
| Ignis fatuus | 285 | |
| Ghosts | 286 | |
| XXII. | Wind |
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