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Business correspondence

Letter from Louis Pasteur to an unidentified colleague, 1866

  • 1866-Sep-05

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In this letter Louis Pasteur indicates his displeasure with the winemakers of France for opposing pasteurization. He goes on to praise the California winemakers for embracing the process fully. In the letter, Pasteur writes, "until May 1, 1865, there did not exist, either in France or abroad, a single liter of wine preserved by my process." This seems to establish May 1, 1865 as the date in which pasteurization was first employed by the wine industry.

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  • 1 page folio, double sided
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Rights No Copyright - United States
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  • Courtesy of Science History Institute

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  • Box 1, Folder 23

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Scientific Biography
Louis Pasteur

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Cite as

Pasteur, Louis. “Letter from Louis Pasteur to an Unidentified Colleague, 1866,” September 5, 1866. Fisher-Pasteur Memorial Collection, Box 1, Folder 23. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/ws859f70x.

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The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.