RUECKER

[Friedrich Kohlrausch, German physicist.] Autograph Letter Signed ('F. Kohlrausch'), in German, to 'Professor Rücker [Sir Arthur William Ruecker]', on the subjects of trams ('elektrischen Strassenbahn') and the 'Reichs-Telegraphic' and 'Telephon'.

Author: 
Friedrich Kohlrausch [Friedrich Wilhelm Georg Kohlrausch] (1840-1910), German physicist, pioneer in the field of electrolyte conductivity [Sir Arthur William Ruecker [Rücker] (1848-1915)]
Publication details: 
On letterhead of the Physikalisch-Technische Reichsanstalt, Charlottenburg. 15 November 1896.
£280.00

2pp., 12mo. 37 lines of text. Bifolium. In fair condition, on aged and worn paper. The first sentence reads: 'Gegen das Projekt einer elektrischen Strassenbahn mit Erdleitung habe ich Einspruch erhoben und das Projekt ist von dem Polizei-Praesidium und von dem Ministerium fur offentliche Arbeiten untersagt worden.' The last paragraph refers to 'die Reichs-Telegraphic', 'Telephon', and 'Linien mit Erdleitung in Berlin', and contains a bar of music.

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[Sir James Dewar, Fulerian Professor of Chemistry at the Royal Institution.] Two Autograph Letters Signed (both 'James Dewar'), one to Sir William Arthur Rücker and the other to his wife, with an engraved portrait of Dewar, signed by him.

Author: 
Sir James Dewar (1842-1923), Scottish chemist and physicist, Fullerian Professor of Chemistry at the Royal Institution, London [Sir Arthur William Rücker [Rucker] (1848-1915), physicist]
Publication details: 
Both letters on letterhead of the Royal Institution of Great Britain, London. 12 May 1898 (to Rücker) and 30 May 1907 (to Lady Rücker). The engraving without place or date.
£220.00

All three items in good condition, with light signs of age, and minor traces of previous mounting. The two letters are both 2pp., 12mo, on bifoliums. ONE: Letter to Rücker of 12 May 1898. He explains that if he is 'not at the Society ready to give the <5 minutes?> Paper at 4.30' it is because he is 'engaged in getting new results [...] In any case I will appear if all goes well.' TWO: Letter to Lady Rücker of 30 May 1907. His wife has had an attack of bronchitis and 'is in the hands of Nurses and Doctor.

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