6-1-1778. H. Poincaré à Félix Tournachon
[09.01.1908]11endnote: 1 The manuscript bears a stamp: “Reçu le 9 janvier 1908 – Répondu 9”.
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Monsieur,
Vous avez fait il y a quelques années, une photographie de M. Janssen.22endnote: 2 The astronomer Jules Janssen died on 23 December, 1907. According to Janssen’s biographer, he sat for a photo shoot with Nadar (Félix Tournachon) on 4 May 1891 (Launay, 2012, 205). A photogravure was made by the Parisian printmaker Paul Dujardin (1843–1913), and published in Paul Nadar’s monthly Paris-photographe 2(10), 1892, 416. A digitized copy may be viewed on Wikimedia Commons. Cette photographie a été reproduite en héliogravure par M. Dujardin. Nous voudrions faire tirer cette héliogravure pour la joindre à une notice biographique que nous voulons publier dans le Bulletin Astronomique et je voudrais vous demander l’autorisation de faire cette reproduction.33endnote: 3 See the necrology by Bigourdan (1908), published in the February, 1908 issue of the Bulletin astronomique, edited by Poincaré. Apparently, Poincaré was unable to obtain authorization before the publication deadline, as no photo accompanied Bigourdan’s necrology. He nonetheless ordered prints from Dujardin, after having convinced Janssen’s daughter Antoinette to intervene with Nadar on his behalf; see Poincaré to Antoinette Janssen, ca. Jan. 1908 (§ 6-1-1777).
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Veuillez agréer, Monsieur, l’expression de ma considération.
Poincaré
membre de l’Institut
ALS 2p. 24281 f. 543, Autographes Félix et Paul Nadar, Bibliothèque nationale de France.
Time-stamp: "27.10.2026 21:07"
Notes
- 1 The manuscript bears a stamp: “Reçu le 9 janvier 1908 – Répondu 9”.
- 2 The astronomer Jules Janssen died on 23 December, 1907. According to Janssen’s biographer, he sat for a photo shoot with Nadar (Félix Tournachon) on 4 May 1891 (Launay, 2012, 205). A photogravure was made by the Parisian printmaker Paul Dujardin (1843–1913), and published in Paul Nadar’s monthly Paris-photographe 2(10), 1892, 416. A digitized copy may be viewed on Wikimedia Commons.
- 3 See the necrology by Bigourdan (1908), published in the February, 1908 issue of the Bulletin astronomique, edited by Poincaré. Apparently, Poincaré was unable to obtain authorization before the publication deadline, as no photo accompanied Bigourdan’s necrology. He nonetheless ordered prints from Dujardin, after having convinced Janssen’s daughter Antoinette to intervene with Nadar on his behalf; see Poincaré to Antoinette Janssen, ca. Jan. 1908 (§ 6-1-1777).