¹ Typical is Victor Meyer's situation in 1888. At the inauguration of the new chemical institute at Göttingen, Meyer, forty years old, was awarded the title of Geheimrat by the Prussian government. At that time, he received a call from the government of Baden to succeed Bunsen at Heidelberg. The offer included the title of Geheimrat II. Klasse, which was superior to Geheimer Hofrat and next to Wirklicher Geheimer Rat. The husband of Victor's cousin Marie congratulated him on the bestowal of the Geheimrat title with a somewhat joking hint of even higher honours: ‘Und wenn sie Dich auch noch “von”-en / Und machen zum “Wirklichen” Dich, / Wir bleiben in Treu Dir gesonnen / Und lieben Dich inniglich!’ Meyer replied ‘Nicht wünsch ich, dass sie mich “von”-en, / Noch zum “Wirklichen” machen mich. / Ach! Ein andrer Traum ist zerronnen! / In Göttingen bleibe ich!…Gold, Ruhmsucht, Titel und Ehren, / Sie halten zurücke mich nicht! / Nichts habe ich hier zu begehren. / Ich tu nur die bittere Pflicht!’ Meyer preferred to be addressed as ‘professor’ rather than with his new title of Geheimrat. Meyer, R., Victor Meyer. Leben und Wirken eines deutschen Chemikers und Naturforschers 1848–1897 (= Ostwald, W. (ed.), Grosse Männer. Studien zur Biologie des Genies, iv), Leipzig, 1917, 227–30.Google Scholar

² Lepsius, B., ‘Festschrift zur Feier des 50jährigen Bestehens der Deutschen Chemischen Gesellschaft und des 100. Geburtstages ihres Begründers August Wilhelm von Hofmann’, Berichte der Deutschen Chemischen Gesellschaft (1918), 51Google Scholar, Sonderheft; Gothaisches Genealogisches Taschenbuch der Briefadeligen Häuser (1919), 13, 383.Google Scholar

³ Schultz, Gustav, 1882 PrivatdozentGoogle Scholar at the University of Strassburg and co-author of volume 3 of August Kekulé, 's Lehrbuch der Organischen Chemie oder der Chetnie der Kohlenstoffverbindungen, Stuttgart 1882Google Scholar; his portrait: Anschütz, R., August Kekulé, I, Leben and Wirken, Berlin 1929Google Scholar, fig. 90, some biographical notes ibid., 485.

⁴ Schultz, G., ‘Bericht über die Feier der Deutschen Chemischen Gesellschaft zu Ehren August Kekulé's’, Berichte der Deutschen Chemischen Gesellschaft (1890), 23, 1265–312.CrossRefGoogle Scholar

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⁶ Emil du Bois-Reymond, physiologist, 1818–96; 1858 professor in Berlin, 1867 permanent secretary of the Royal Prussian Academy of Sciences. His participation in the Benzolfest may be viewed in the light of L. Boltzmann's ironic criticism: ‘Others [than Austrians] are rather different. They believe in honouring themselves by glorifying their great men, and it must be considered moving when in their zeal they exaggerate and out of enthusiasm almost make demi-gods of them though history teaches that they were humans…for example, for du Bois-Reymond the true merits of Helmholtz are not sufficiently great. He is not afraid of adorning him with other birds' feathers, of degrading Robert Mayer, of exaggerating Helmholtz's merits concerning the electromagnetic theory of light, or of producing a phrase with respect to an explanation of the theory of gravity.’ ‘Zur Erinnerung an Josef Loschmidt’, vom Executiv-Comité zur Errichtung eines Loschmidt-Denkmales, Vienna, 1899, 23–4.Google Scholar See also his sarcastic remark on the Berlin Geheimräte, ibid., 25.

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⁸ Later incorporated into the city of Berlin.

⁹ Jacobsthal, Johann Eduard, architect, 1839–1902Google Scholar; 1874 professor in Charlottenburg. He constructed the railway stations of Metz, (1874–1878)Google Scholar, Strassburg, (1877–1884)Google Scholar and Berlin-Alexanderplatz as well as the Joachimsthalsche Gymnasium in Berlin.

¹⁰ Virchow, Rudolf, pathologist and anthropologist, 1821–1902Google Scholar; 1846 prosector at the Charité hospital, 1849 professor in Würzburg, , 1856Google Scholar in Berlin; member of the scientific deputation of the Ministry of Cultural Affairs and of the Berlin City Council, 1862 Member of the Prussian House of Deputies, 1880–93 of the Reichstag (Fortschrittspartei).

¹¹ von Gossler, Gustav, 1838–1902Google Scholar; from 1877 Member of the Reichstag (Conservative Parry), 1881 President of the Reichstag, 1879 undersecretary of state of the Ministry of Education, 1881–91 Minister of Cultural Affairs, then Oberpräsident (governor) of Westpreussen, . Gothaisches Genealogisches Taschenbuch, op. cit. (2), 298.Google Scholar

¹² Hans Hermann Freiherr von Berlepsch, b. 1843; 1873 Landrat of Kattowitz, , 1877–1880Google Scholar Minister of State of the Principality of Schwarzburg-Sondershausen, 1881 Vice President in Koblenz, 1884 Regierungspräsident in Düsseldorf, 1889 Oberpräsident (governor) of the Rhine province, 1890–96 Minister of Commerce. Gothaisches Genealogisches Taschenbuch der Freiherrlichen Häuser (1910) 60, 21, 22.Google Scholar

¹³ Hermann Lucanus, Friedrich Karl, 1831–1908Google Scholar, knighted in 1888, law graduate; 1859–88 in the Prussian Ministry of Education, 1881 undersecretary of state, from 1888 chief of the civil cabinet of Wilhelm II. He was raised to nobility on the same day as (von) Siemens, Werner. Gothaisches Genealogisches Taschenbuch, op. cit. (2), 522.Google Scholar

¹⁴ Bosse, Robert, 1832–1901Google Scholar; 1891 Secretary of State of the Imperial Office of Justice, 1892–99 Prussian Minister of Cultural Affairs.

¹⁵ Paul Hinschius, professor of protestant church law, 1835–98; professor 1863 in Halle, 1865 Berlin, 1868 Kiel, , 1872Google Scholar Berlin. He participated in the conferences of the Prussian Ministry of Cultural Affairs for the elaboration of church laws; 1872–81 Member of the Reichstag (National Liberal Parry).

¹⁶ von Forckenbeck, Max, 1821–1892Google Scholar, a leading member of the Fortschrittspartei (Progressive Party), 1866 one of the founders of the National Liberal Party, 1866–73 President of the Prussian House of Deputies, 1873 Lord Mayor of Breslau, 1878–92 of Berlin, since 1867 Member of the Reichstag, , 1874–1879Google Scholar its president, 1884 active in the foundation of the Deutschfreisinnige Partei, from 1874 Member of the Prussian House of Lords.

¹⁷ Althoff, Friedrich, 1839–1908Google Scholar; 1870 lawyer, 1871 head of the department of church and school affairs in the Oberpräsidium at Strassburg, 1872Google Scholar professor at Strassburg, later head of the department for the universities in the Prussian Ministry of Cultural Affairs, 1897 Ministerialdirektor for universities and high schools; Member of the Prussian House of Lords. Meyer, , op. cit. (1), 423Google Scholar, gives 29 February 1839 as his date of birth. However, 1839 was not a leap-year; read 19 February.

¹⁸ Helmholtz, Hermann, 1821–1894Google Scholar, knighted in 1882; 1848 teacher of anatomy at the Academy of Arts in Berlin, professor 1849 in Königsberg, 1855 Bonn, 1858 Heidelberg, 1871 Berlin (of physics), 1888 president of the Physikalisch-technische Reichsanstalt. Berichte der Deutschen Chemischen Gesellschaft (1894), 27, 2643–52Google Scholar (with his portrait); Meyer, , op. cit. (1), 438.Google Scholar

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³¹ Kussmaul, Adolf, 1822–1902Google Scholar; professor of medicine 1857 in Heidelberg, 1859 Erlangen, 1863 Freiburg, 1876 Strassburg. Kussmaul on Kekulé: Kussmaul, A., Aus meiner Dozentenzeit in Heidelberg (ed. Czerny, V.), 2nd edn, Stuttgart, 1908, 61.Google Scholar Portraits of Kussmaul: Kussmaul, A., Jugenderinnerungen eines alien Arztes, 4th edn, Stuttgart, 1900Google Scholar (painting of Franz Lenbach); ‘Festschrift Herrn Geheimrath Prof. Dr A. Kussmaul in Heidelberg zur Vollendung seines 80. Lebensjahres gewidmet’, Deutscbes Archiv für Klinische Medicin (1902) 73Google Scholar (frontispiece); Kluge, F. (ed.), Adolf Kussmaul. Seine aktuelle Bedeutung für Innere Medizin und Neurologie, Stuttgart, 1985 (frontispiece, fig. 1).Google Scholar

³² Eichrodt, Ludwig, 1827–1892Google Scholar; judge (Oberamtsrichter).

³³ Das Buch Biedermaier. Gedichte von Ludwig Eichrodt und Adolf Kussmaul sowie ihrem Vorbild, dem ‘alten Dorfschulmeister’ Samuel Friedrich Sauter gesammelt und herausgegeben von Ludwig Eichrodt. Neue, von Friedrich Eichrodt besorgte und von Eduard Ille illustrierte Ausgabe, Stuttgart 1911.

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⁴⁵ Anschütz, , op. cit. (3), 178–82Google Scholar; II, Abhandlungen, Berichte, Kritiken, Artikel, Reden, 171–86.Google Scholar

⁴⁶ This is pure scorn, too, because Kolbe held the view that it was impossible to elucidate this.

⁴⁷ Anschütz, , op. cit. (45).Google Scholar

⁴⁸ Vorländer, D., ‘Jacob Volhard’, Berichte der Deutschen Chemischen Gesellschaft (1912), 45, 1855–1902CrossRefGoogle Scholar (with Volhard's portrait; a different photograph: Anschütz, , op. cit. (3), fig. 108).Google Scholar

⁴⁹ Kekulé, A., Cassirte Kapitel aus der Abhandlung: Ueber die Carboxytartronsäure and die Constitution des Benzols, Weinheim, 1965Google Scholar: ‘Du kannst Dich weder vom Parteistandpunkt frei machen, noch es unterlassen allerlei schnotterige Redensarten, persönliche u. hämische Bemerkungen einzustreuen’.

⁵⁰ Ladenburg, A., Lebens-Erinnerungen, Breslau, 1912Google Scholar; Herz, W., ‘Albert Ladenburg’, Berichte der Deutschen Chemischen Gesellschaft (1912), 45, 3597–644.Google Scholar

⁵¹ Alexander M. Butlerow's portrait: Anschütz, , op. cit. (3), fig. 52.Google Scholar His monument is in the Russian city of Kazan.

⁵² Ladenburg, , op. cit. (50), 38–9.Google Scholar

⁵³ Butlerow, A., Lehrbuch der organischen Chemie zur Einführung in das specielle Studium derselben, Leipzig, 1868.Google Scholar

⁵⁴ Loschmidt, Joseph, 1821–1895Google Scholar; 1866–91 professor in Vienna; see: Anschütz, (1913)Google Scholar, note 55 below; (1912), note 63 below.

⁵⁵ Loschmidt, J., Chemische Studien, I. A. Constitutions-Formeln der organisechen Chemie in graphischer Darstellung. B. Das Mariotte'sche Gesetz, Vienna, 1861.Google Scholar The title-page has been reproduced in Kirchhof, F., ‘Joseph Loschmidt und die Benzolformel’, Chemiker-Zeitung (1967), 91, 48–51Google Scholar, fig. 1, and correctly quoted by Kayser, C. G., Vollständiges Bücher-Lexicon, Leipzig, 1866, xvi, L–Z, 51.Google Scholar The Austrian National Library owns a copy with the baffling variant ‘in geographischer Darstellung’ which was recently reprinted (Aldrich Chemical Company, Milwaukee WI, 1989). Anschütz's new edition of 1913 was obviously based on a copy with ‘in graphischer Darstellung’: Loschmidt, J., Konstitutions-Formeln der organischen Chemie in graphischer Darstellung (ed. Anschütz, R.) (= Ostwald's Klassiker der exakten Wissenschaften, 190), Leipzig, 1913.Google Scholar

⁵⁶ Graebe, C., Geschichte der organischen Chemie, Berlin 1920, i, 235–9.Google Scholar

⁵⁷ Graebe, , op. cit. (56), 238.Google Scholar

⁵⁸ Pietsch, E. with Beyer, E., ‘Leopold Gmelin – der Mensch, sein Werk und seine Zeit, Berichte der Deutschen Chemischen Gesellschaft (1939), 72A, 5–33.Google Scholar In 1988, the West German postal authority honoured the second centenary of his birth by a special stamp with his portrait.

⁵⁹ Graebe, , op. cit. (56), 236.Google Scholar

⁶⁰ This device has a long tradition in heraldry.

⁶¹ Though speculating about the connectivity of the six carbon atoms in benzene, Loschmidt did not arrive at a conclusion. He therefore treated the ‘benzene nucleus’ as a sort of hexavalent superatom, represented by a ball, hence in print by a circle, the diameter of which took account of the ‘atomic weight’ of 72 and therefore exceeded that of the sulphur ball (circle). The proper meaning of all ‘circles’ as balls is obvious from Loschmidt's text and was correctly understood by Graebe, , op. cit. (56), 236–7, 286–8.Google Scholar Much later, the benzene ball (circle) was wrongly taken to represent the connectivity of the carbon atoms. From this error, the opinion arose that Loschmidt rather than Kekulé conceived the ‘benzene ring’: Wiswesser, W. J., ‘Johann Joseph Loschmidt (1821–1895): a forgotten genius. Benzene rings and much more in 1861’, Aldrichimica Acta (1989), 22, 17–18Google Scholar; ‘Johann Joseph Loschmidt (1821–1895): Ein vergessenes Genie. Der Benzolring und so manches andere im Jahre 1861’, Österreichische Chemie-Zeitschrift (1990), 91, 47–8Google Scholar; ‘Johann Josef Loschmidt (1821–1895) – Zapomenutý génius. Benzenové jádro a mnohem víe v roce 1861’, Chemické Listy pro vědu a pr mysl (1990), 84, 1062–6Google Scholar; Bader, A., ‘Loschmidt, not Kekulé, published first benzene ring diagrams’Google Scholar, paper presented at the ACS-Symposium ‘The Kekulé Benzoifest 100 Years Later’, Boston MA, USA, 23 April 1990 (and elsewhere). Noe, C. R. and Bader, A., ‘Loschmidt, Josef’, in The Kekulé Riddle. A Challenge for Chemists and Psychologists (ed. Wotiz, J. H.), Clearwater FL, Vienna IL, 1993, 221–45Google Scholar; Noe, C. R. and Bader, A., ‘Facts are better than dreams’, Chemistry in Britain (1993), 126–8.Google Scholar A detailed refutation was presented by Schiemenz, G. P., ‘Good-bye, Kekulé? Eine Anamnese der Loschmidt-Legende’Google Scholar, (a) Symposium of the Division of History of Chemistry of the Gesellschaft Deutscher Chemiker, Tübingen, Germany, 22 March 1991, (b) First ‘Mineralkontor’ International Conference on the History of Chemistry and Chemical Industry, Veszprém, Hungary, 15 August 1991, (c) Department of Chemistry of the University of Tartu, Estonia, 2 October 1991, (d) Department of Chemistry of the University of Oldenburg, Germany, 6 February 1992, (e) University of Rostock, Germany, 13 February 1992. Schiemenz, G. P., ‘Goodbye, Kekulé? Josef Loschmidt und die monocyclische Struktur des Benzols’, Naturwissenschaftliche Rundschau (1993), 46, 85–8.Google Scholar

⁶² Anschütz, (ed.) (1913), op. cit. (55), e.g. 112–13, 122, 126.Google Scholar

⁶³ Anschütz, , op. cit. (3), 305Google Scholar, revising his previous opinion: Anschütz, R., ‘Über Loschmidts graphische Formeln, ein Beitrag zur Geschichte der Benzol-Theorie’, Berichte der Deutschen Chemischen Gesellschaft (1912), 45, 539–53CrossRefGoogle Scholar; Anschütz, (1913), op. cit. (55), 105.Google Scholar

⁶⁴ In a letter to Erlenmeyer: Anschütz, , op. cit. (3), 305.Google Scholar Like Erlenmeyer, Kekulé ‘was in command of a striking, never failing humour; part of his mentality was an ironic trait which became obvious also to strangers by way of the sarcastic smile which often played around his lips’Google Scholar (Meyer, , op. cit. (1), 433).Google Scholar For a proper assessment of Kekulé's modesty, one has to bear in mind that he himself applied for his ennoblement: Anschütz, , op. cit. (3), 645Google Scholar (‘Not without exhibiting a sort of satisfaction, Kekulé showed us the precious certificate of ennoblement’, ibid., 646–7); Štrbáňová, S. and Janko, J., ‘Bohuslav Raýman, Friedrich August Kekule a Česká Akademie Věd a umění’, Dějiny Věd a Techniky (1990), 23, 93–105Google Scholar; ‘Die Umstände der Nobilitierung F. A. Kekules’, Chemie in unserer Zeit (1991), 25, 208–13.Google ScholarŠtrbáňová, S. and Janko, J., ‘Kekulé's character in the light of his ennoblement’Google Scholar, in Wotiz, op. cit. (61), 195–210.Google Scholar

⁶⁵ Baeyer's description of Kekulé's early benzene formula is a severe distortion, too: Schiemenz, G. P., ‘Where did Kekulé find “his” benzene formula?’Google Scholar, paper presented at the ACS-Symposium ‘The Kekulé Benzolfest 100 Years Later’, Boston MA, USA, 23 April 1990. G. P. Schiemenz, in Wotiz, op. cit. (61), 103–22.Google Scholar

⁶⁶ Wizinger-Aust, R., ‘August Kekulé, Leben und Werk. Erkenntnisse und Probleme um eine chemische Vision’, in op. cit. (23), 7–32, on 29.Google Scholar

⁶⁷ Fischer, E., ‘Aus meinem Leben’ in Gesammelte Werke (ed. Bergmann, M.), Berlin, 1922, 50Google Scholar; Hoesch, K., ‘Emil Fischer. Sein Leben und sein Werk’, Berichte der Deutschen Chemischen Gesellschaft (1921), 54, Sonderheft, 44.Google Scholar

⁶⁸ Meyer, , op. cit. (1), 459Google Scholar; Hückel, W., ‘Otto Wallach 1847–1931’, Berichte der Deutschen Chemischen Gesellschaft (1961), 94, pp. VII–CVIIICrossRefGoogle Scholar; von Bonin, , op. cit. (27)Google Scholar, portrait, 55. A Swedish postage stamp of 1970 dedicated to the Nobel Prize winners of 1910 depicts him together with van der Waals. Cf. Kauffman, G. B., ‘Chemistry on stamps: Nobel laureates in chemistry. A philatelic survey, 1. 1901–1910; 2. 1911–1934; 3. 1935–1988’, Journal of Chemical Education (1990), 67, 451–6, 569–74, 774–81.CrossRefGoogle Scholar

⁶⁹ Helferich, B., Zur Geschichte der Chemie in Bonn, op. cit. (23), 55–78, on 66.Google Scholar

⁷⁰ Helferich, , op. cit. (23), 68Google Scholar; cf. Hückel, , op. cit. (68), p. XXIV.Google Scholar

⁷¹ Conrad, M., ‘Emil Erlenmeyer’, Berichte der Deutschen Chemischen Gesellschaft (1910), 43, 3645–64CrossRefGoogle Scholar (with Erlenmeyer's portrait).

⁷² Anschütz, , op. cit. (3), 412.Google Scholar For an appreciation of the meaning of Handwerk, see the stringent criticism of Swiss students by Meyer, V.: Meyer, , op. cit. (1), 78.Google Scholar The phrase ‘Each man to his own’ (‘Sehe jeder, wie er's treibe’) is a quotation from Goethe, J. W.'s poem Beherzigung.Google Scholar

⁷³ Anschütz, R., op. cit. (3), 411.Google Scholar

⁷⁴ Herre, F., Kaiser Friedrich III. Deutschlands liberale Hoffnung. Eine Biographie, Stuttgart 1987.Google Scholar

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⁷⁷ According to Hoesch, , op. cit. (67), 115Google Scholar, it was during such a merry banquet that Hofmann died on 6 May 1892. However, Landolt, H., Berichte der Deutschen Chemischen Gesellschaft (1892), 25, 1575–7CrossRefGoogle Scholar, and J. Volhard, ibid. (1902), 35, Sonderheft, 1–196, p. 192Google Scholar, reported that he died on 5 May in his home shortly after his return from a faculty meeting. The date 5 May 1892 is confirmed in op. cit. (2), 383.

⁷⁸ ‘dem etwas eingeschlafenen Hofmannschen Institute’.

⁷⁹ Hoesch, , op. cit. (67), 115.Google Scholar

⁸⁰ Huisgen, , op. cit. (27), 304Google Scholar: ‘Zu den Sternstunden der Deutschen Chemischen Gesellschaft gehörte das Benzolfest, das 1890 zu Ehren von August Kekulé gefeiert wurde.’

⁸¹ Schultz, , op. cit. (4).Google Scholar

⁸² Rupe, H., Adolf von Baeyer als Lehrer and Forscher, Erinnerungen aus seinem Privatlaboratorium (Sammlung chemischer und chemisch-technischer Vorträge NF 15), Stuttgart, 1932, 10.Google Scholar

⁸³ Baeyer, A., ‘Ueber die Constitution des Benzols’, Justus Liebig's Annalen der Chemie (1888), 245, 103–90CrossRefGoogle Scholar; Ladenburg, A., ‘Ueber die Constitution des Benzols’Google Scholar, ibid. (1888), 246, 382–4.

⁸⁴ Ladenburg, A., ‘Ueber Benzolformeln’, Berichte der Deutschen Chemischen Gesellschaft (1890), 23, 1007–11.CrossRefGoogle Scholar Baeyer's reply: Baeyer, A., ‘Ueber die Constitution des Benzols, 5. Ueber die Reductionsproducte der Phtalsäure’, Justus Liebig's Annalen der Chemie (1890), 258, 145–219.CrossRefGoogle Scholar

⁸⁵ Meyer, , op. cit. (1), 175Google Scholar; Meyer, R., ‘Victor Meyer. 1848–1897’, Berichte der Deutschen Chemischen Gesellschaft (1908), 41, 4505–718CrossRefGoogle Scholar, on 4573.

⁸⁶ Meyer, , op. cit. (1), 250Google Scholar; Meyer, (1908), op. cit. (85), 4601Google Scholar; see Meyer, V., ‘Grundzüge der Stereochemie’, Chemiker-Zeitung (1893), 17, 1869–76.Google Scholar

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⁸⁹ Hoesch, , op. cit. (67), 115Google Scholar; Fischer, , op. cit. (67), 141.Google Scholar To be sure, both Fischer and Hoesch mentioned that the faculty, though not putting him in the first position on the list, really wanted Fischer to be called. In a letter dated 15 July 1896, Victor Meyer commented on the death of Kekulé: ‘Vorgestem ist Kekulé gestorben! Ein ungeheurer Verlust an einem Menschen, freilich nicht mehr für die Wissenschaft, für die er schon lange stumm war’; Meyer, , op. cit. (1), 301–2Google Scholar; Meyer, (1908), op. cit (85), 4628.Google Scholar

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