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    Louis Pasteur. Group of Twelve Letters and a Photograph, 1857-1889.
    1) ALS. "L. Pasteur." Three pages (of a bifolium) in French, on Faculty of Sciences, University of Lille, stationary, 8.5" x 11", Lille; February 17, 1857. In this letter to an unnamed correspondent, Pasteur, then dean of the faculty of sciences at the University of Lille, writes concerning a geology text by a M. Delopon [?], in which he disagrees with the author's two main assertions. 2) ALS. "L. Pasteur" and "J. A. Serret." Three pages (of a bifolium) in French on Ecole Normale Supérieure stationary, 5" x 8", Paris; July 17 1859. In this "Report of the subcommittee composed MM. Serret and Pasteur" by Pasteur (in his hand) and the French mathematician Joseph Alfred Serret (1819-1885), the two men recommend publication of a complete edition of the works of the French physicist Augustin- Jean Fresnel (1788-1827). Pasteur admired Fresnel's work on light and more particularly the work on the polarization of the light; his own work was based on the same physical data. Despite Pasteur's and Serret's recommendation, Fresnel's complete works were not published for many years. 3) AL. One page in French, 7.75" x 10", n.p.; May 15, 1865. It is not known to whom Pasteur addressed this letter, but in it he responds to a question of a Mr. Gay concerning a fermentation process used by Chileans whereby a piece of meat is put in a vat of wine in order to prevent it from going sour. 4) ALS. "L. Pasteur." Three pages (of a bifolium) in French, "5.25 x 8.25", Lyon, April 4, 1871. Addressed to a student named Raulin, presumably at the École Normale Supérieure laboratory of physiological chemistry, where he served as director, Pasteur writes on various subjects, beginning with instructing his pupil to sell some equipment or items that Pasteur does not have time to do himself. He discusses experiments and writes of the relationship between the movement of molecules and the movements of the universe. 5) ALS. "L. Pasteur." One page (of a bifolium) in French, along with a canceled postal cover, 4.25" x 6.5", Clermont-Ferrand; June 22, 1871. Pasteur responds to a request by a pharmacist, one Mr. Frison, in Oraison, France, for information concerning flacherie (a disease of silkworms caused by eating infected mulberry leaves). Pasteur informs Frison of published information for the two volumes he wrote on the matter, Etudes sur la Maladie des Vers à Soie, published in 1870. 6) ALS. "L. Pasteur." Two pages (of a bifolium) in French, "5.25 x 8", Paris; March 30, 1874. In this letter to an unnamed correspondent, Pasteur requests that proposed legislation that would provide him with a pension for his service to the nation include language specifically explaining the nature of his accomplishments concerning silkworms, wine, vinegar, and beer. 7) ALS. "L. Pasteur." One page (of a bifolium) in French, 5.25" X 8", Paris; May 20, 1879. Letter to unnamed correspondent in which Pasteur writes of the publication of a book that appeared previously, in large part, as an article. It appears that he seeks information on the book's subject matter to be included in an upcoming work. 8) AL. One page letter in French, 5" x 8", Fendun, [China?]; [June or July?], 1882. Letter from an unknown correspondent introducing Pasteur to a "Dr. Madin."8a) ALS. "L. Pasteur." One page, in French, n.p.; October 17 1882. Pasteur's response to the previous letter. 9) ALS. "L. Pasteur." One page in French, along with a canceled postal cover addressed to the Mayor of Avesnelles, 4" x 2.75" note card, Paris; May 20, 1886. A note in which Pasteur expresses his gratitude to the mayor and town council of Avesnelles for their interest in the Pasteur Institute. 10) ALS. "L. Pasteur." One page (of a bifolium) in French, 4.25" x 6.5", Arbois, France; October 3, 1887. In this letter, Pasteur writes to an unnamed friend that he is far from Paris and has no information to offer about the succession of their departed colleague Caro because he is not allowed to have any personal say into his own election and cannot even share his preferences concerning said election. Elme-Marie Caro (1826-1887) was a French philosopher. [The letter is accompanied by a cabinet card photograph of Pasteur, 4" x 5.75" albumin print on a 4.25" x 6.5" mount, Paris; [reprinted after 1913] made by the famous French photograph Paul Nadar (1856-1939) in 1886.] 11) ALS. "L. Pasteur." One page (of a bifloium) in French, along with a canceled postal cover, 4.5" x 7", Paris; November 22, 1887. In this letter addressed to the Count of Hervé de Bauville [or Beauville], Pasteur quotes from the French mathematician and physicist François Arago (1786-1853), "It's said that upon hearing of Cuvier's death. Arago exclaimed 'This death reduces us all.'" 12) ALS. "L. Pasteur." One page in French, accompanied by a canceled postal cover, 4.25" x 3.5", Paris; December 24, 1889. In this letter, addressed to a Mr. Astier, secretary of the French Academy of Medicine, Pasteur requests a subscription for James Prescott Joule (1818-1889), possibly to be used for some type of memorial in light of the recent death of the English mathematician and physicist. 13. AD. One page in French, 4.25"x 5.5" card, n.p.; n.d. Appears to be experimental data recorded by Pasteur.

    An interesting group of letters highlighting Pasteur's various interests scientific activities.

    Condition: Overall good. 1) slight tears at right edges of horizontal fold, with tear on page two repaired by tape; 4) has slight tears at the edges of the horizontal fold, on the right edge of page 3, and at the bottom of the crease; 8) has small paper loss on right hand top and small tears on bottom of letter; 12) has a crease on the lower right hand corner.

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