C A L E N D A R O F A B S T R A C T S 1 9 2 3 8 5 7 214. From Niedermoeller Dahle, Westfalen, 22 November 1923 Thanks AE for his letter of 15 September. His analysis of the Michelson-Morley exper- iment shows that when a light ray is reflected on a mirror in oblique position to it, its position after reflection will be influenced by the distance between its source and the mirror it will be wider or narrower finally, parts of a beam will arrive at their target at different times. He is a Lutheran pastor. Intends to repeat the experiment with parabolic mirrors. Requests help in borrowing them from a research institute. IE notes: “Beantw. 2. I. 24.” ALS. [44 585]. 215. From Edmund Schopen Berlin, 26 November 1923 Is organizing an international pacifist organization and a conference to which he invites AE. On 5 December a meeting of German, French, and English financiers will take place to discuss the financial foundations of the organization. ALS. [45 008]. 216. From the Notgemeinschaft der Deutschen Wissenschaft Berlin, 27 November 1923 In response to AE’s letter of 24 November, transferring $12 to Jakob Grommer. TKSX. [11 428] 217. From Heskel Joseph Shemtob Baghdad, 29 November 1923 Plans to bequeath £140,000 to the Keren Hayesod after his death. Invites AE to join the board of trustees. Attached to Abs. 254. ALS. [44 894]. 218. To Joseph Chapiro [Berlin,] 30 November 1923 Will not recommend him to Paul M. Warburg because AE is not a close acquaintance of Warburg’s, and does not want to take up the time of a very busy person. ALSX. [43 448]. 219. From Adolf von Harnack Berlin, December 1923 Because of the passing away of eight members of the Order “Pour le mérite für Wissen- schaften und Künste,” requests nominations for new members in the fields of linguistics, including philology German history the entire humanities chemistry biology music painting and sculpture. Invites current members to his home for a preliminary discus- sion of the election. Is attached to Abs. 295. TLS. [30 192]. 220. From Hans Joachim Berlin, 1 December 1923 After having had a discussion with AE on his proposal (see Abs. 175), he replied to the doubts raised by AE in a letter that was lost. Discusses AE’s finding a problem with the compatibility of a discontinuous space and the identity of physical objects. Geometry is a link between arithmetic and physics. ALS. [13 442]. 221. From the Royal Institution of Great Britain London, 3 December 1923 Diploma of honorary membership. DIPL. [65 028]. 222. From the Mathematical Institute of the University of Moscow [Moscow,] 4 December 1923 Invites AE to join the international committee for the general scientific supervision of the edition of Lobachevsky’s collected papers. TLS. [14 238]. 223. From Gustaf Strömberg [Pasadena,] 5 December 1923 Upon the request of Walter S. Adams, director of the Mount Wilson Observatory, sends AE a manuscript of a paper soon to be published in Mount Wilson Contributions (Ström- berg 1924) and another published paper cited in the manuscript. Solicits AE’s opinion on the physics aspect of velocity restriction. Another copy has been sent to H. A. Lorentz. TLS. [22 276].