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Photograph of a bookshop selling copies of 'La France nouvelle', by Marshall Phillipe Pétain

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Photograph of a bookshop selling copies of 'La Fra...

Engraving depicting an Louis Pasteur experiment demonstrating that fermentation and putrefaction are caused by air-borne organisms

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Engraving depicting an Louis Pasteur experiment de...

The principle of the cantilever which was used in the Fourth Bridge

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The principle of the cantilever which was used in ...

Portrait of Louis Pasteur

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Portrait of Louis Pasteur

Engraving depicting an Louis Pasteur experiment demonstrating that fermentation and putrefaction are caused by air-borne organisms

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Engraving depicting an Louis Pasteur experiment de...

Commemorative medal depicting Louis Pasteur

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Commemorative medal depicting Louis Pasteur

Engraving depicting Louis Pasteur's first apparatus for cooling and fermenting wort during his work on beer

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Engraving depicting Louis Pasteur's first apparatu...

A condensing air pump

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A condensing air pump

Engraving depicting Louis Pasteur's first apparatus for cooling and fermenting wort during his work on beer

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Engraving depicting Louis Pasteur's first apparatu...

A Geissler tube, an early gas discharge tube used to demonstrate the principles of electrical glow discharge, similar to modern neon lighting

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A Geissler tube, an early gas discharge tube used ...

Engraving depicting Louis Pasteur's first apparatus for cooling and fermenting wort during his work on beer

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Engraving depicting Louis Pasteur's first apparatu...

A Geissler tube, an early gas discharge tube used to demonstrate the principles of electrical glow discharge, similar to modern neon lighting

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A Geissler tube, an early gas discharge tube used ...

A Brewster Stereoscope

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A Brewster Stereoscope

A woman viewing a picture through a Brewster Stereoscope

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A woman viewing a picture through a Brewster Stere...

A Brewster Stereoscope

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A Brewster Stereoscope

The principles of leverage

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The principles of leverage

Portrait of Louis Pasteur

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Portrait of Louis Pasteur

The explanation by Caspar Schott of how he thought the Egyptian priest used the principle of the camera obscura to display miraculous messages

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The explanation by Caspar Schott of how he thought...

Portrait of Louis Pasteur

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Portrait of Louis Pasteur

A Geissler tube, an early gas discharge tube used to demonstrate the principles of electrical glow discharge, similar to modern neon lighting

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A Geissler tube, an early gas discharge tube used ...

The principles of leverage

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The principles of leverage

A Geissler tube, an early gas discharge tube used to demonstrate the principles of electrical glow discharge, similar to modern neon lighting

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A Geissler tube, an early gas discharge tube used ...

The principle of a fountain

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The principle of a fountain

The exterior of the École Normale Supérieure, Paris, where Louis Pasteur as Director of Scientific Studies

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The exterior of the École Normale Supérieure, Pari...

The principles of leverage

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The principles of leverage

The Library of the École Normale Supérieure, Paris, where Louis Pasteur as Director of Scientific Studies

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The Library of the École Normale Supérieure, Paris...

Photograph of bales of wool being loaded at Victoria Docks in Melbourne

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Photograph of bales of wool being loaded at Victor...

Title page of the Principles of Chemistry

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Title page of the Principles of Chemistry

An available candidate. the one qualification for a Whig president

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An available candidate. the one qualification for ...

Photograph of Martin Rodbell

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Photograph of Martin Rodbell

The Uley Mercury

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The Uley Mercury

Early example of principles of levelling

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Early example of principles of levelling

Poster designed by Ludvig Hohlwein, 1926, Colour lithograph.

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Poster designed by Ludvig Hohlwein, 1926, Colour l...

Poster designed by Ludvig Hohlwein

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Poster designed by Ludvig Hohlwein

Poster designed by Ludvig Hohlwein

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Poster designed by Ludvig Hohlwein

Poster designed by Ludvig Hohlwein

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Poster designed by Ludvig Hohlwein

Poster designed by Ludvig Hohlwein

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Poster designed by Ludvig Hohlwein

Southern farmers demands, 1939

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Southern farmers demands, 1939

The building of the ark by Udo Keppler

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The building of the ark by Udo Keppler

Southern cotton farmers demand behind the US, 1939

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Southern cotton farmers demand behind the US, 1939

Crushing gold bearing ores in mills similar in principle to flour mills

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Crushing gold bearing ores in mills similar in pri...

Cruikshank, Le docteur se livre à scène sa favorite

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Cruikshank, Le docteur se livre à scène sa favorit...

Ferdinand I

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Ferdinand I

Robert Owen

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Robert Owen

Smallpox Hospital, Highgate, London, c1871

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Smallpox Hospital, Highgate, London, c1871

Discovery of the principle of the telescope by children

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Discovery of the principle of the telescope by chi...

General properties of bodies

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General properties of bodies

Equilibrium of solids

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Equilibrium of solids

Illustration of the principle of the camera obscura

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Illustration of the principle of the camera obscur...

Frontispiece of the ninth edition of Charles Lyell "Principles of Geology", London, 1853, showing the Temple of Serapis at Puzzuoli in 1836 and how it had slowly subsided, thus supporting the Uniformi...

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Frontispiece of the ninth edition of Charles Lyell...

Milking parlour equipped with Thistle suction

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Milking parlour equipped with Thistle suction

Hippolyte Fizeau

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Hippolyte Fizeau

Public weighbridge used to weigh cattle in a market

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Public weighbridge used to weigh cattle in a marke...

Thomas Robert Malthus

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Thomas Robert Malthus

Archimedes in his bath

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Archimedes in his bath

Archimède

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Archimède

Moulin broyant le minerai et l'or, similaire au moulin à blé

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Moulin broyant le minerai et l'or, similaire au mo...

Malthus, Essai sur le principe de population

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Malthus, Essai sur le principe de population

Le premier Tableau periodique des elements de Mendeleïev

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Le premier Tableau periodique des elements de Mend...

Centrale de Huntingdon et maison de correction, Angleterre

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Centrale de Huntingdon et maison de correction, An...