Eng translation : " THE OPERATOR VOCALLY ENGRAVES A PHONOGRAPHIC COPY. THE OPERATOR MAKES THE CAMERA REPEAT THE WORDS ENGRAVED ON THE CLICHE " - Original in french : " L'OPÉRATEUR GRAVANT PAR LA PAROLE UN CLICHÉ PHONOGRAPHIQUE. L'OPÉRATEUR FAISANT RÉPETER PAR L'APPAREIL LES PAROLES GRAVÉES SUR LE CLICHE " - Extract from "L'Illustration Journal Universel" - French illustrated magazine - 1878

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Keywords: 19th, art, century, discoveries, engraving, history, illustrated, newspaper, popular, press, progress, science, scientific, technical, technology, vintage, xixth