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Light Science for Leisure Hours

In preparing these Essays, my chief object has been to present scientific truths in a light and readable form—clearly and simply, but with an exact adherence to the facts as I see them. I have followed—here and always—the rule of trying to explain my meaning precisely as I should wish others to explain, to myself, matters with which I was unfamiliar. Hence I have avoided that excessive simplicity which some seem to consider absolutely essential in scientific essays intended for general perusal, but which is often even more perplexing than a too technical style. The chief rule I have followed, in order to make my descriptions clear, has been to endeavour to make each sentence bear one meaning, and one only. Speaking as a reader, and especially as a reader of scientific books, I venture to express an earnest wish that this simple rule were never infringed, even to meet the requirements of style.It will hardly be necessary to mention that several of the shorter Essays are rather intended to amuse than to instruct. - Summary by the Preface (9 hr 40 min)

Chapters

The Prefaces

Strange Discoveries respecting the Aurora

The Earth a Magnet

Our Chief Time-piece losing Time

Encke the Astronomer

Venus on the Sun’s Face

Britain’s Coal Cellars

The Secret of the North Pole

Is the Gulf Stream a Myth?

Floods in Switzerland

A Great Tidal Wave

Deep-Sea Dredgings

The Tunnel through Mont Cenis

Tornadoes

Vesuvius

The Earthquake in Peru

The Greatest Sea-Wave ever known

The Usefulness of Earthquakes

The Forcing Power of Rain

A Shower of Snow-Crystals

Long Shots

Influence of Marriage on the Death-Rate

The Topographical Survey of India

A Ship attacked by a Sword-fish

The Safety-lamp

The Dust we have to Breathe

Photographic Ghosts

The Oxford and Cambridge Rowing Styles

Betting on Horse Races: or, the State of the Odds

Squaring the Circle

A New Theory of Achilles’ Shield