8 0 8 C H R O N O L O G Y 1 9 2 3 – 1 9 2 4 Nov. 8–Dec. 18 In Leyden. November 8–9 Hitler’s failed “Beer Hall Putsch” in Munich. before November 13 Completes his review of Josef Winternitz’s Relativity The- ory and Epistemology (Doc. 149). before November 15 Completes “On an Obvious Hypothesis about the Origin of the Geomagnetic Field and Its Experimental Refutation” (Doc. 152). before November 18 Elected as an external member of the Gesellschaft der Wis- senschaften in Göttingen in the mathematical-physical class. Vossische Zeitung, 18 November 1923. December 3 At the general monthly meeting of the Royal Institution of Great Britain, London, James-Crichton Browne, Arthur Keith, William H. Bragg, and its president, Alan Ian Percy, 8th Duke of Northumberland, propose to elect AE as an honorary member. [75 522]. before December 6 Completes “Does Field Theory Offer Possibilities for the Solution of the Quantum Problem?” (Doc. 170). December 13 In Amsterdam to receive gold medal from the Genootschap ter Bevordering van Natuur-, Genees- en Heelkunde, (Doc. 177). December 18–21 In Ede with Carel J. de Ridder. December 21 Lectures at the N. V. Philips’ Gloeilampenfabrieken in Eindhoven. December 23 Returns to Berlin. before December 27 Completes the foreword to Chaim Weizmann, Israel und sein Land. (Doc. 185). 1924 after January 4 His “Comments upon the Present Situation in Europe” (Doc. 86) is received. January 9 Invited to give a lecture tour in South America by the Asociación Hebraica. Invited to join the board of governors of the Hebrew University. February 6 Makes sound recording for the Prussian State Library (Doc. 208). February 7 Completes “Note on Prussian Citizenship” (Doc. 209).